Fix contact requirement list (#1)

Fix contact requirement list

congress.html

@@ -117,9 +117,9 @@ Messe-Allee 1
             <li>need large amounts of construction material
                 <ul>
                     <li>we can help organize bulk orders</li>
-                    <li>require a lot of on-site transportation</li>
                 </ul>
             </li>
+            <li>require a lot of on-site transportation</li>
         </ul>
     </p>