_content: unhide various reference links in China

Sites like blog, play, talks, and tour (.golang.org)
were not available in China: we have just the one URL golang.google.cn.
But now:
 - Everything is consolidated to a single site, go.dev.
 - golang.google.cn serves the go.dev content.
 - We've arranged to use relative links for all the content on go.dev
   that points elsewhere on go.dev, so that it all works as golang.google.cn too.

So we can unhide various reference links that were previously hidden
to avoid advertising dead links.

Change-Id: I5e1bf84de61817b0df95049b1f6fc773139d6cf6
Reviewed-on: https://go-review.googlesource.com/c/website/+/365496
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
diff --git a/_content/doc/index.html b/_content/doc/index.html
index 52e5eb9..1f432a5 100644
--- a/_content/doc/index.html
+++ b/_content/doc/index.html
@@ -57,13 +57,7 @@
 
 <img class="gopher" src="/doc/gopher/doc.png" alt=""/>
 
-<h3 id="go_tour">
-	{{if googleCN}}
-	  A Tour of Go
-	{{else}}
-	  <a href="/tour/">A Tour of Go</a>
-	{{end}}
-</h3>
+<h3 id="go_tour"><a href="/tour/">A Tour of Go</a></h3>
 <p>
 An interactive introduction to Go in three sections.
 The first section covers basic syntax and data structures; the second discusses
@@ -255,7 +249,6 @@
 <li><a href="/doc/codewalk/sharemem">Share Memory by Communicating</a></li>
 </ul>
 
-{{if not googleCN}}
 <h2 id="blog">From the Go Blog</h2>
 <p>The <a href="https://blog.golang.org/">official blog of the Go project</a>, featuring news and in-depth articles by
 the Go team and guests.</p>
@@ -289,7 +282,6 @@
 <li><a href="/blog/v2-go-modules">Go Modules: v2 and Beyond</a> - creating and publishing major versions 2 and higher.</li>
 <li><a href="/blog/module-compatibility">Keeping Your Modules Compatible</a> - how to keep your modules compatible with prior minor/patch versions.</li>
 </ul>
-{{end}}
 
 <h4>Tools</h4>
 <ul>
@@ -297,12 +289,10 @@
 <li><a href="/doc/gdb">Debugging Go Code with GDB</a></li>
 <li><a href="/doc/articles/race_detector.html">Data Race Detector</a> - a manual for the data race detector.</li>
 <li><a href="/doc/asm">A Quick Guide to Go's Assembler</a> - an introduction to the assembler used by Go.</li>
-{{if not googleCN}}
 <li><a href="/blog/c-go-cgo">C? Go? Cgo!</a> - linking against C code with <a href="/cmd/cgo/">cgo</a>.</li>
 <li><a href="/blog/godoc-documenting-go-code">Godoc: documenting Go code</a> - writing good documentation for <a href="/cmd/godoc/">godoc</a>.</li>
 <li><a href="/blog/profiling-go-programs">Profiling Go Programs</a></li>
 <li><a href="/blog/race-detector">Introducing the Go Race Detector</a> - an introduction to the race detector.</li>
-{{end}}
 </ul>
 
 <h2 id="wiki">Wiki</h2>
@@ -315,7 +305,6 @@
 for more Go learning resources.
 </p>
 
-{{if not googleCN}}
 <h2 id="talks">Talks</h2>
 
 <img class="gopher" src="/doc/gopher/talks.png" alt=""/>
@@ -346,7 +335,6 @@
 <p>
 See the <a href="/talks">Go Talks site</a> and <a href="/wiki/GoTalks">wiki page</a> for more Go talks.
 </p>
-{{end}}
 
 <h2 id="nonenglish">Non-English Documentation</h2>
 
diff --git a/_content/help.html b/_content/help.html
index 7e7beb9..b79bf71 100644
--- a/_content/help.html
+++ b/_content/help.html
@@ -10,7 +10,6 @@
 
 <img class="gopher" src="/doc/gopher/help.png" alt=""/>
 
-{{if not googleCN}}
 <h3 id="mailinglist"><a href="https://groups.google.com/group/golang-nuts">Go Nuts Mailing List</a></h3>
 <p>
 Get help from Go users, and share your work on the official mailing list.
@@ -38,12 +37,10 @@
 <h3 id="irc"><a href="ircs:irc.libera.chat/go-nuts">Go IRC Channel</a></h3>
 <p>Get live support at <code>#go-nuts</code> on <code>irc.libera.chat</code>,
 the Go IRC channel.</p>
-{{end}}
 
 <h3 id="faq"><a href="/doc/faq">Frequently Asked Questions (FAQ)</a></h3>
 <p>Answers to common questions about Go.</p>
 
-{{if not googleCN}}
 <h2 id="inform">Stay informed</h2>
 
 <h3 id="announce"><a href="https://groups.google.com/group/golang-announce">Go Announcements Mailing List</a></h3>
@@ -70,7 +67,6 @@
 The <a href="https://changelog.com/gotime">Go Time podcast</a> is a panel of Go experts and special guests
 discussing the Go programming language, the community, and everything in between.
 </p>
-{{end}}
 
 <h2 id="community">Community resources</h2>
 
@@ -80,13 +76,11 @@
 meet to talk about Go. Find a chapter near you.
 </p>
 
-{{if not googleCN}}
 <h3 id="playground"><a href="/play">Go Playground</a></h3>
 <p>A place to write, run, and share Go code.</p>
 
 <h3 id="wiki"><a href="/wiki">Go Wiki</a></h3>
 <p>A wiki maintained by the Go community.</p>
-{{end}}
 
 <h3 id="conduct"><a href="/conduct">Code of Conduct</a></h3>
 <p>
diff --git a/_content/index.md b/_content/index.md
index 3a392ed..90dfe17 100644
--- a/_content/index.md
+++ b/_content/index.md
@@ -178,8 +178,8 @@
       <div class="Playground-secondaryButtons">
         {{- if $canShare}}
         <button class="Button js-playgroundShareEl" title="Share this code">Share</button>
-        <a class="Button tour" href="/tour/" title="Playground – Go from your browser">Tour</a>
         {{- end}}
+        <a class="Button tour" href="/tour/" title="Playground – Go from your browser">Tour</a>
       </div>
       </div>
     </div>