Fix example code double-div rendering regression.
In c494ad61ef94b75ade6cb39ec22031df3959c5ea, codeFn was refactored to additionally write <pre> and </pre>. Most of the instances of {{code ...}} in templates were updated accordingly, but this one was missed.
As a result, after that commit, the example was written with a double-div.diff --git a/gddo-server/assets/templates/pkg.html b/gddo-server/assets/templates/pkg.html
index c98b74d..63ff746 100644
--- a/gddo-server/assets/templates/pkg.html
+++ b/gddo-server/assets/templates/pkg.html
@@ -178,7 +178,7 @@
<div id="ex-{{.ID}}" class="panel-collapse collapse"><div class="panel-body">
{{with .Example.Doc}}<p>{{.|comment}}{{end}}
<p>Code:{{if .Example.Play}}<span class="pull-right"><a href="?play={{.ID}}">play</a> </span>{{end}}
- <pre>{{code .Example.Code nil}}</pre>
+ {{code .Example.Code nil}}
{{with .Example.Output}}<p>Output:<pre>{{.}}</pre>{{end}}
</div></div>
</div>
