diff --git a/content/static/js/site.js b/content/static/js/site.js
index bf89eaa..36363d4 100644
--- a/content/static/js/site.js
+++ b/content/static/js/site.js
@@ -3,5 +3,5 @@
  * Copyright 2019-2020 The Go Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style
  * license that can be found in the LICENSE file.
- */(function(){"use strict";const e=document.querySelector(".js-header"),a=document.querySelectorAll(".js-headerMenuButton");a.forEach(n=>{n.addEventListener("click",s=>{s.preventDefault(),e?.classList.toggle("is-active"),n.setAttribute("aria-expanded",`${e?.classList.contains("is-active")??!1}`)})});const r=document.querySelector(".js-scrim");r&&r.hasOwnProperty("addEventListener")&&r.addEventListener("click",n=>{n.preventDefault(),e?.classList.remove("is-active"),a.forEach(s=>{s.setAttribute("aria-expanded",`${e?.classList.contains("is-active")??!1}`)})})})(),function(){window.dataLayer=window.dataLayer||[],window.dataLayer.push({"gtm.start":new Date().getTime(),event:"gtm.js"})}();function removeUTMSource(){const t=new URLSearchParams(window.location.search),e=t.get("utm_source");if(e!=="gopls"&&e!=="godoc")return;const a=new URL(window.location.href);t.delete("utm_source"),a.search=t.toString(),window.history.replaceState(null,"",a.toString())}document.querySelector(".js-gtmID")?.dataset.gtmid&&window.dataLayer?window.dataLayer.push(function(){removeUTMSource()}):removeUTMSource();
+ */(function(){"use strict";const e=document.querySelector(".js-header"),a=document.querySelectorAll(".js-headerMenuButton");a.forEach(n=>{n.addEventListener("click",s=>{s.preventDefault(),e?.classList.toggle("is-active"),n.setAttribute("aria-expanded",`${e?.classList.contains("is-active")??!1}`)})});const r=document.querySelector(".js-scrim");r&&r.hasOwnProperty("addEventListener")&&r.addEventListener("click",n=>{n.preventDefault(),e?.classList.remove("is-active"),a.forEach(s=>{s.setAttribute("aria-expanded",`${e?.classList.contains("is-active")??!1}`)})})})(),function(){window.dataLayer=window.dataLayer||[],window.dataLayer.push({"gtm.start":new Date().getTime(),event:"gtm.js"})}();function removeUTMSource(){const t=new URLSearchParams(window.location.search),e=t.get("utm_source");if(e!=="gopls"&&e!=="godoc"&&e!=="pkggodev")return;const a=new URL(window.location.href);t.delete("utm_source"),a.search=t.toString(),window.history.replaceState(null,"",a.toString())}document.querySelector(".js-gtmID")?.dataset.gtmid&&window.dataLayer?window.dataLayer.push(function(){removeUTMSource()}):removeUTMSource();
 //# sourceMappingURL=site.js.map
diff --git a/content/static/js/site.js.map b/content/static/js/site.js.map
index cf94a63..a601c83 100644
--- a/content/static/js/site.js.map
+++ b/content/static/js/site.js.map
@@ -1,7 +1,7 @@
 {
   "version": 3,
   "sources": ["site.ts"],
-  "sourcesContent": ["/*!\n * @license\n * Copyright 2019-2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/**\n * site.ts contains a set of functions that should be invoked for\n * all page views before other scripts are added to the page.\n */\n\n/**\n * A bit of navigation related code for handling dismissible elements.\n */\n(function registerHeaderListeners() {\n  'use strict';\n\n  const header = document.querySelector('.js-header');\n  const menuButtons = document.querySelectorAll('.js-headerMenuButton');\n  menuButtons.forEach(button => {\n    button.addEventListener('click', e => {\n      e.preventDefault();\n      header?.classList.toggle('is-active');\n      button.setAttribute('aria-expanded', `${header?.classList.contains('is-active') ?? false}`);\n    });\n  });\n\n  const scrim = document.querySelector('.js-scrim');\n  // eslint-disable-next-line no-prototype-builtins\n  if (scrim && scrim.hasOwnProperty('addEventListener')) {\n    scrim.addEventListener('click', e => {\n      e.preventDefault();\n      header?.classList.remove('is-active');\n      menuButtons.forEach(button => {\n        button.setAttribute('aria-expanded', `${header?.classList.contains('is-active') ?? false}`);\n      });\n    });\n  }\n})();\n\ninterface TagManagerEvent {\n  event: string;\n  'gtm.start': number;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-unused-vars\ninterface Window {\n  dataLayer?: (TagManagerEvent | VoidFunction)[];\n}\n\n/**\n * setupGoogleTagManager intializes Google Tag Manager.\n */\n(function setupGoogleTagManager() {\n  window.dataLayer = window.dataLayer || [];\n  window.dataLayer.push({\n    'gtm.start': new Date().getTime(),\n    event: 'gtm.js',\n  });\n})();\n\n/**\n * removeUTMSource removes the utm_source GET parameter if present.\n * This is done using JavaScript, so that the utm_source is still\n * captured by Google Analytics.\n */\nfunction removeUTMSource() {\n  const urlParams = new URLSearchParams(window.location.search);\n  const utmSource = urlParams.get('utm_source');\n  if (utmSource !== 'gopls' && utmSource !== 'godoc') {\n    return;\n  }\n\n  /** Strip the utm_source query parameter and replace the URL. **/\n  const newURL = new URL(window.location.href);\n  urlParams.delete('utm_source');\n  newURL.search = urlParams.toString();\n  window.history.replaceState(null, '', newURL.toString());\n}\n\nif (document.querySelector<HTMLElement>('.js-gtmID')?.dataset.gtmid && window.dataLayer) {\n  window.dataLayer.push(function () {\n    removeUTMSource();\n  });\n} else {\n  removeUTMSource();\n}\n"],
-  "mappings": "AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,GAeA,AAAC,WAAmC,CAClC,aAEA,KAAM,GAAS,SAAS,cAAc,cAChC,EAAc,SAAS,iBAAiB,wBAC9C,EAAY,QAAQ,GAAU,CAC5B,EAAO,iBAAiB,QAAS,GAAK,CACpC,EAAE,iBACF,GAAQ,UAAU,OAAO,aACzB,EAAO,aAAa,gBAAiB,GAAG,GAAQ,UAAU,SAAS,cAAgB,UAIvF,KAAM,GAAQ,SAAS,cAAc,aAErC,AAAI,GAAS,EAAM,eAAe,qBAChC,EAAM,iBAAiB,QAAS,GAAK,CACnC,EAAE,iBACF,GAAQ,UAAU,OAAO,aACzB,EAAY,QAAQ,GAAU,CAC5B,EAAO,aAAa,gBAAiB,GAAG,GAAQ,UAAU,SAAS,cAAgB,cAmB1F,UAAiC,CAChC,OAAO,UAAY,OAAO,WAAa,GACvC,OAAO,UAAU,KAAK,CACpB,YAAa,GAAI,QAAO,UACxB,MAAO,cASX,0BAA2B,CACzB,KAAM,GAAY,GAAI,iBAAgB,OAAO,SAAS,QAChD,EAAY,EAAU,IAAI,cAChC,GAAI,IAAc,SAAW,IAAc,QACzC,OAIF,KAAM,GAAS,GAAI,KAAI,OAAO,SAAS,MACvC,EAAU,OAAO,cACjB,EAAO,OAAS,EAAU,WAC1B,OAAO,QAAQ,aAAa,KAAM,GAAI,EAAO,YAG/C,AAAI,SAAS,cAA2B,cAAc,QAAQ,OAAS,OAAO,UAC5E,OAAO,UAAU,KAAK,UAAY,CAChC,oBAGF",
+  "sourcesContent": ["/*!\n * @license\n * Copyright 2019-2020 The Go Authors. All rights reserved.\n * Use of this source code is governed by a BSD-style\n * license that can be found in the LICENSE file.\n */\n\n/**\n * site.ts contains a set of functions that should be invoked for\n * all page views before other scripts are added to the page.\n */\n\n/**\n * A bit of navigation related code for handling dismissible elements.\n */\n(function registerHeaderListeners() {\n  'use strict';\n\n  const header = document.querySelector('.js-header');\n  const menuButtons = document.querySelectorAll('.js-headerMenuButton');\n  menuButtons.forEach(button => {\n    button.addEventListener('click', e => {\n      e.preventDefault();\n      header?.classList.toggle('is-active');\n      button.setAttribute('aria-expanded', `${header?.classList.contains('is-active') ?? false}`);\n    });\n  });\n\n  const scrim = document.querySelector('.js-scrim');\n  // eslint-disable-next-line no-prototype-builtins\n  if (scrim && scrim.hasOwnProperty('addEventListener')) {\n    scrim.addEventListener('click', e => {\n      e.preventDefault();\n      header?.classList.remove('is-active');\n      menuButtons.forEach(button => {\n        button.setAttribute('aria-expanded', `${header?.classList.contains('is-active') ?? false}`);\n      });\n    });\n  }\n})();\n\ninterface TagManagerEvent {\n  event: string;\n  'gtm.start': number;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-unused-vars\ninterface Window {\n  dataLayer?: (TagManagerEvent | VoidFunction)[];\n}\n\n/**\n * setupGoogleTagManager intializes Google Tag Manager.\n */\n(function setupGoogleTagManager() {\n  window.dataLayer = window.dataLayer || [];\n  window.dataLayer.push({\n    'gtm.start': new Date().getTime(),\n    event: 'gtm.js',\n  });\n})();\n\n/**\n * removeUTMSource removes the utm_source GET parameter if present.\n * This is done using JavaScript, so that the utm_source is still\n * captured by Google Analytics.\n */\nfunction removeUTMSource() {\n  const urlParams = new URLSearchParams(window.location.search);\n  const utmSource = urlParams.get('utm_source');\n  if (utmSource !== 'gopls' && utmSource !== 'godoc' && utmSource !== 'pkggodev') {\n    return;\n  }\n\n  /** Strip the utm_source query parameter and replace the URL. **/\n  const newURL = new URL(window.location.href);\n  urlParams.delete('utm_source');\n  newURL.search = urlParams.toString();\n  window.history.replaceState(null, '', newURL.toString());\n}\n\nif (document.querySelector<HTMLElement>('.js-gtmID')?.dataset.gtmid && window.dataLayer) {\n  window.dataLayer.push(function () {\n    removeUTMSource();\n  });\n} else {\n  removeUTMSource();\n}\n"],
+  "mappings": "AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,GAeA,AAAC,WAAmC,CAClC,aAEA,KAAM,GAAS,SAAS,cAAc,cAChC,EAAc,SAAS,iBAAiB,wBAC9C,EAAY,QAAQ,GAAU,CAC5B,EAAO,iBAAiB,QAAS,GAAK,CACpC,EAAE,iBACF,GAAQ,UAAU,OAAO,aACzB,EAAO,aAAa,gBAAiB,GAAG,GAAQ,UAAU,SAAS,cAAgB,UAIvF,KAAM,GAAQ,SAAS,cAAc,aAErC,AAAI,GAAS,EAAM,eAAe,qBAChC,EAAM,iBAAiB,QAAS,GAAK,CACnC,EAAE,iBACF,GAAQ,UAAU,OAAO,aACzB,EAAY,QAAQ,GAAU,CAC5B,EAAO,aAAa,gBAAiB,GAAG,GAAQ,UAAU,SAAS,cAAgB,cAmB1F,UAAiC,CAChC,OAAO,UAAY,OAAO,WAAa,GACvC,OAAO,UAAU,KAAK,CACpB,YAAa,GAAI,QAAO,UACxB,MAAO,cASX,0BAA2B,CACzB,KAAM,GAAY,GAAI,iBAAgB,OAAO,SAAS,QAChD,EAAY,EAAU,IAAI,cAChC,GAAI,IAAc,SAAW,IAAc,SAAW,IAAc,WAClE,OAIF,KAAM,GAAS,GAAI,KAAI,OAAO,SAAS,MACvC,EAAU,OAAO,cACjB,EAAO,OAAS,EAAU,WAC1B,OAAO,QAAQ,aAAa,KAAM,GAAI,EAAO,YAG/C,AAAI,SAAS,cAA2B,cAAc,QAAQ,OAAS,OAAO,UAC5E,OAAO,UAAU,KAAK,UAAY,CAChC,oBAGF",
   "names": []
 }
diff --git a/content/static/js/site.ts b/content/static/js/site.ts
index de6a112..a1f9d36 100644
--- a/content/static/js/site.ts
+++ b/content/static/js/site.ts
@@ -68,7 +68,7 @@
 function removeUTMSource() {
   const urlParams = new URLSearchParams(window.location.search);
   const utmSource = urlParams.get('utm_source');
-  if (utmSource !== 'gopls' && utmSource !== 'godoc') {
+  if (utmSource !== 'gopls' && utmSource !== 'godoc' && utmSource !== 'pkggodev') {
     return;
   }