Shortened link to fit in navigation bar

_includes/header.html

@@ -24,7 +24,7 @@
                 <!-- li class="divider-vertical"></li>
                 <li><a href="/location.html">Anfahrt</a></li -->
                 <li class="divider-vertical"></li>
-                <li><a href="/cms.html">Chaos macht Schule</a></li>
+                <li><a href="/cms.html">CmS</a></li>
                 <li class="divider-vertical"></li>
                 <li><a href="/contact.html">Kontakt</a></li>
                 <li class="divider-vertical"></li>