Merge pull request #5231 from ostezer/fix-breadcrumbs

Amend breadcrumbs to link to the section indexes, i.e., home/:section/
Upstream-commit: 2f3cccfcbd8eb1ba70243373c91364bebbef50b0
Component: engine

components/engine/docs/theme/mkdocs/breadcrumbs.html

@@ -2,13 +2,9 @@
   <li><a href="{{ homepage_url }}"><span class="glyphicon glyphicon-home"></span></a></li>
   {% for section in nav %}
     {% if section.active %}
+      <li><a href="../">{{ section.title }}</a></li>
       {% if section.children %}
-        {% for page in section.children[:1] %}
-        <li><a href="{{ page.url }}">{{ section.title }}</a></li>
-        {% endfor %}
-      {% endif %}
-      {% if section.children %}
-      <li class="active"><a href="{{ current_page.url }}">{{ current_page.title }}</a></li>
+        <li class="active"><a href="{{ current_page.url }}">{{ current_page.title }}</a></li>
       {% endif %}
     {% endif %}
   {% endfor %}