Ensure API docs work with links at first level

rest_framework/templates/rest_framework/docs/document.html

@@ -15,8 +15,10 @@
 </div>
 
 {% for section_key, section in document.data.items %}
+{% if section_key %}
     <h2 id="{{ section_key }}" class="coredocs-section-title">{{ section_key }} <a href="#{{ section_key }}"><i class="fa fa-link" aria-hidden="true"></i>
 </a></h2>
+{% endif %}
 
     {% for link_key, link in section.links.items %}
         {% include "rest_framework/docs/link.html" %}

rest_framework/templates/rest_framework/docs/sidebar.html

@@ -6,9 +6,9 @@
         <ul id="menu-content" class="menu-content collapse out">
             {% for section_key, section in document.data.items %}
             <li data-toggle="collapse" data-target="#{{ section_key }}-dropdown" class="collapsed">
-                <a><i class="fa fa-dot-circle-o fa-lg"></i> {{ section_key }} <span class="arrow"></span></a>
+                <a><i class="fa fa-dot-circle-o fa-lg"></i> {% if section_key %}{{ section_key }}{% else %}API Endpoints{% endif %} <span class="arrow"></span></a>
             </li>
-            <ul class="sub-menu collapse" id="{{ section_key }}-dropdown">
+            <ul class="sub-menu {% if section_key %}collapse{% endif %}" id="{{ section_key }}-dropdown">
                 {% for link_key, link in section.links.items %}
                     <li><a href="#{{ section_key }}-{{ link_key }}">{{ link.title|default:link_key }}</a></li>
                 {% endfor %}

rest_framework/templatetags/rest_framework.py

@@ -39,7 +39,7 @@ class CodeNode(template.Node):
 
     def render(self, context):
         text = self.nodelist.render(context)
-        return pygments_highlight(text)
+        return pygments_highlight(text, self.lang, self.style)
 
 
 @register.filter()