add HTML landing page link

Author: LiNk-NY

layouts/components/packages/documentation.html

@@ -31,6 +31,9 @@ <h3>Documentation</h3>
   <% if @package[:repo] != "workflows/" %>
     <tr>
       <td>Reference Manual</td>
+      <td>
+        <a href="../manuals/<%=@package[:Package]%>/man/<%=@package[:Package]%>.html">HTML</a>
+      </td>
       <td>
         <a href="../manuals/<%=@package[:Package]%>/man/<%=@package[:Package]%>.pdf">PDF</a>
       </td>