header: Remove Wiki from top bar

The contents of the Wiki page has been moved to the front page, removing the need for this

Author: gonX

site/_includes/header.html

@@ -19,9 +19,6 @@
         <li class="nav-item">
           <a class="nav-link text-light" href="{% link _sections/Plugins.md %}">Plugins</a>
         </li>
-        <li class="nav-item">
-          <a class="nav-link text-light" href="{% link _sections/Wiki.md %}">Wiki</a>
-        </li>
         <li class="nav-item">
           <a class="nav-link text-light" href="{{ site.data.links.project.UpstreamRepo }}/releases">Changelog</a>
         </li>