Fix style inconsistency.

doc/_templates/layout.html

@@ -12,7 +12,8 @@
 
 {% block rootrellink %}
         <li><a href="{{ pathto('index') }}">Sphinx home</a>&nbsp;|&nbsp;</li>
-        <li><a href="{{ pathto('contents') }}">Documentation</a>&raquo;</li>
+        <li><a href="{{ pathto('contents') }}">Documentation</a>
+          &raquo;</li>
 {% endblock %}
 
 {% block header %}