fixing edit link

_includes/sidebar.html

@@ -23,8 +23,7 @@
         <a href="https://github.com/{{ site.github.owner_name }}"><img class="icon" src="{{ site.baseurl }}/public/gitlab.png" alt="github"/></a>
       </span><br/>
 
-      <a class="sidebar-nav-item" href="{{ site.github.zip_url | replace: 'zipball',
-					'edit' }}/{% if page.source %}{{ page.source }}{%
+      <a class="sidebar-nav-item" href="{{site.repository}}/edit/master/{% if page.source %}{{ page.source }}{%
 					else %}{{ page.path }}{% endif %}">Edit this page</a>
       (<a class="sidebar-nav-item" href="{{ site.sources }}">HowTo</a>)<br/>