docs(website): Added disclaimer to improve the page at the top of the wiki

Author: TwoTenPvP

docs/_layouts/docs.html

@@ -9,6 +9,15 @@
         </div>
 
         <div class="col-md-8">
+            <div class="panel panel-success">
+                <div class="panel-heading">
+                    <h3 class="panel-title">Improve the wiki</h3>
+                </div>
+                <div class="panel-body">
+                    The MLAPI is free and open source. If you find anything missing from the wiki. Please help us <a href="{{site.git_edit_address}}/{{ page.path }}">improve this page</a> to benefit everyone.
+                </div>
+            </div>
+
             <h1>{{ page.title }}</h1>
             <div id="markdown-content-container">{{ content }}</div>
             <div style="clear:both;">