docs: Small sphinx template correction
diff --git a/docs/ns3_html_theme/layout.html b/docs/ns3_html_theme/layout.html
index b01b158..f41fa31 100644
--- a/docs/ns3_html_theme/layout.html
+++ b/docs/ns3_html_theme/layout.html
@@ -54,8 +54,11 @@
 {% endblock %}
 
 {% block rootrellink %}
-    <li class="navelem"><a href="{{ theme_homepage }}">{{ theme_projectname }}</a><span class="navelem">&nbsp;</span></li>
+    <li style="background: none"><a href="{{ theme_homepage }}">{{ theme_projectname }}</a><span class="navelem">&nbsp;</span></li>
+    <li style="background: none"><a href="{{ theme_apidocsurl }}">{{ theme_apidocs }}</a><span class="">&nbsp;</span></li>
+{#
     {{ super() }}
+#}
 {% endblock %}
       
 {% if theme_collapsiblesidebar|tobool %}
diff --git a/docs/ns3_html_theme/theme.conf b/docs/ns3_html_theme/theme.conf
index fd5de72..f733deb 100644
--- a/docs/ns3_html_theme/theme.conf
+++ b/docs/ns3_html_theme/theme.conf
@@ -7,6 +7,8 @@
 projectname = ndnSIM
 homepage = http://ndnSIM.net/
 homepage2 = http://irl.cs.ucla.edu/
+apidocs = ndnSIM API
+apidocsurl = http://ndnSIM.net/doxygen/annotated.html
 customstylesheet = ns3_stylesheet.css
 logo = ndn-logo.png
 logo2 = irl-logo.png