Update mobile_menu.html

Author: jeremiahschung

_includes/mobile_menu.html

@@ -73,7 +73,7 @@
           </li>
 
           <li class="{% if current[1] == 'serve' %}active{% endif %}">
-            <a href="{{ site.baseurl }}serve">TorchServe</a>
+            <a href="{{ site.baseurl }}/serve">TorchServe</a>
           </li>
 
           <li class="{% if current[1] == 'hub' %}active{% endif %}">