Remove plural of Teams from footer.

Author: kgodey

themes/vocabulary_theme/templates/layout.html

@@ -233,7 +233,7 @@
                     <a href="{{ '/contributing-code'|url }}" class="menu-item">Contribution Guidelines</a>
                   </li>
                   <li>
-                    <a href="{{ '/community/community-team'|url }}" class="menu-item">Community Teams</a>
+                    <a href="{{ '/community/community-team'|url }}" class="menu-item">Community Team</a>
                   </li>
                   <li>
                     <a href="{{ '/contributing-code/projects'|url }}" class="menu-item">Project List</a>