Add index reference to go template primer doc page

Related to @bjornerik 's answer in this discussion: http://discuss.gohugo.io/t/inserting-data-from-data-file-into-content-file-newbie-question/1002/3 ... I figured I'd make myself useful and add the reference to the index function, on the go template primer page.

Also, I moved the reference links to the bottom.

A general comment: as good as these docs are, the primer at this point makes some assumptions about audience knowledge, so some might find it lacking. Once I understand better, I might make some more clarifying edits.

diff --git a/docs/content/templates/go-templates.md b/docs/content/templates/go-templates.md
index adb1ae3c9d8154cc91a22c4d213eeec13fd4dae3..86555fd8fb64c2cdf625918cbc28fda7497a83ec 100644 (file)
--- a/docs/content/templates/go-templates.md
+++ b/docs/content/templates/go-templates.md
@@ -144,6 +144,10 @@ range.
         {{ $element }}
     {{ end }}
 
+The `index` function is a [Go][] built-in, and you can read about it [here][gostdlibpkgtexttemplate]. `index`:
+
+> ...returns the result of indexing its first argument by the following arguments. Thus "index x 1 2 3" is, in Go syntax, `x[1][2][3]`. Each indexed item must be a map, slice, or array.
+
 ### Conditionals
 
 `if`, `else`, `with`, `or` & `and` provide the framework for handling conditional
@@ -383,10 +387,6 @@ so, such as in this example:
 </nav>
 ```
 
-
-[go]: http://golang.org/
-[gohtmltemplate]: http://golang.org/pkg/html/template/
-
 # Template example: Show only upcoming events
 
 Go allows you to do more than what's shown here.  Using Hugo's
@@ -406,3 +406,7 @@ the future:
         </li>
       {{ end }}
     {{ end }}
+
+[go]: http://golang.org/
+[gohtmltemplate]: http://golang.org/pkg/html/template/
+[gostdlibpkgtexttemplate]: http://golang.org/pkg/text/template/