Update module.html

public/app/plugins/panel/pluginlist/module.html

@@ -23,7 +23,7 @@
     </div>
     <div class="pluginlist-item" ng-show="category.list.length === 0">
       <a class="pluginlist-link pluginlist-link-{{plugin.state}}" href="https://grafana.net/plugins">
-        <span class="pluginlist-none-installed">No additional panels installed. <span class="pluginlist-emphasis">Browse Grafana.net</span></span>
+        <span class="pluginlist-none-installed">None installed. <span class="pluginlist-emphasis">Browse Grafana.net</span></span>
       </a>
     </div>
   </div>