Make link to wiki use https.

Author: rouilj

website/issues/html/page.html

@@ -184,7 +184,7 @@ <h1><a href="/">Roundup Tracker - Issues</a></h1>
 
      </li>
     <li><a href="http://www.roundup-tracker.org/contact.html" title="Get in touch.">Contact</a></li>
-    <li><a href="http://wiki.roundup-tracker.org" title="Share your ideas...">Wiki</a></li>
+    <li><a href="https://wiki.roundup-tracker.org" title="Share your ideas...">Wiki</a></li>
     <li><a href="http://www.roundup-tracker.org/code.html" title="Be the sources with you.">Code</a></li>
   </ul>
  </div> <!-- menu -->