GHOST-728: Fix webhook button style

Author: Shr3ps

templates/app_view.html

@@ -19,7 +19,7 @@
             </button></a>
         </li>
         <li>
-            <a href="/web/webhooks?application={{ app['name'] }}"><button class="btn btn-primary btn-raised"><span class="glyphicon glyphicon-link"> Webhooks</span></button></a>
+            <a href="/web/webhooks?application={{ app['name'] }}"><button class="btn btn-primary btn-raised"><span class="glyphicon glyphicon-link"></span> Webhooks</button></a>
         </li>
         <li>
             <a href="/web/apps/{{ app['_id'] }}/edit"><button class="btn btn-raised btn-warning"><span class="glyphicon glyphicon-edit"></span> Edit</button></a>