knowledge-base-index.hbs: fix HTML validation error.

Author: XhmikosR

layouts/knowledge-base-index.hbs

@@ -13,11 +13,13 @@
       <article>
         {{{ contents }}}
 
+        <ul class="no-padding">
         {{#each collections.knowledgeBase}}
           {{#startswith path 'knowledge/'}}
             <li><a href="/{{../site.locale}}/{{ path }}/">{{ title }}</a></li>
           {{/startswith}}
         {{/each}}
+        </ul>
       </article>
 
     </div>