Fix github pages

Oh bash...

Without this links all had the .sections styling and were put on a separate
line.

etc/generate-gh-pages

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -eu
 
 examples_style="
 .source {
@@ -24,7 +25,7 @@ for org_file in $org_files; do
     name=$(basename $org_file)
     go_org_examples+="<li><a id='toc-${name}' href='#${name}'>${name}</a>"
 done
-examples+="</ul><hr>"
+go_org_examples+="</ul><hr>"
 
 for org_file in $org_files; do
     echo generating content for $org_file