Add missing end if in base.html

Author: kmAyush

website/forum/templates/base.html

@@ -113,6 +113,7 @@
                 </ul>
                 </li>
               </ul>
+            {% endif %}
         </ul>
             </div>
         </nav>
@@ -180,4 +181,4 @@ <h3 class="ml-0">Links</h3>
         <script src="{% static 'js/loader.js' %}"></script>
     </body>
 
-</html>
+</html>