Give indication that there may be other template bits necessary for tag to work.

I came to this page from "Getting Started" template examples where all pages examples are rendered within {% block content %} tags which are not in these template examples."
;

CONTRIBUTORS.rst

@@ -198,6 +198,7 @@ Contributors
 * Robert Slotboom
 * Erick M'bwana
 * Andreas Nüßlein
+* John Heasly
 
 Translators
 ===========

docs/topics/streamfield.rst

@@ -467,6 +467,8 @@ StreamField provides an HTML representation for the stream content as a whole, a
 
     {% load wagtailcore_tags %}
 
+     ...
+
     {% include_block page.body %}
 
 
@@ -476,6 +478,8 @@ In the default rendering, each block of the stream is wrapped in a ``<div class=
 
     {% load wagtailcore_tags %}
 
+     ...
+
     <article>
         {% for block in page.body %}
             <section>{% include_block block %}</section>
@@ -489,6 +493,8 @@ For more control over the rendering of specific block types, each block object p
 
     {% load wagtailcore_tags %}
 
+     ...
+
     <article>
         {% for block in page.body %}
             {% if block.block_type == 'heading' %}