changed wiki link

_includes/header.html

@@ -24,7 +24,7 @@
                 <li class="divider-vertical"></li>
                 <li><a href="/contact.html">Kontakt</a></li>
                 <li class="divider-vertical"></li>
-                <li><a href="https://dokuwiki.chaospott.de">Wiki</a></li>
+                <li><a href="https://wiki.chaospott.de">Wiki</a></li>
                 <li class="divider-vertical"></li>
                 <li><a href="https://podcast.chaospott.de">Podcast</a></li>
                 <li class="divider-vertical"></li>