Close tag on js examples.

examples/javascript/js_example/templates/base.html

@@ -12,13 +12,16 @@
   #result { font-weight: bold; }
 </style>
 <ul>
-  <li><span>Type:</span>
+  <li><span>Type:</span></li>
   <li class="{% if js == 'plain' %}active{% endif %}">
     <a href="{{ url_for('index', js='plain') }}">Plain</a>
+  </li>
   <li class="{% if js == 'fetch' %}active{% endif %}">
     <a href="{{ url_for('index', js='fetch') }}">Fetch</a>
+  </li>
   <li class="{% if js == 'jquery' %}active{% endif %}">
     <a href="{{ url_for('index', js='jquery') }}">jQuery</a>
+  </li>
 </ul>
 <hr>
 <p>{% block intro %}{% endblock %}</p>