Merge pull request #1598 from pmario/fix-plugin-button-tooltip

fixes the [Get more plugins] button tooltip

core/ui/ControlPanel/Plugins.tid

@@ -96,7 +96,7 @@ No information provided
 </$set>
 \end
 
-<$button message="tm-modal" param="$:/core/ui/ControlPanel/Modals/AddPlugins" tooltip=<<lingo Add/Hint>> class="tc-btn-big-green" style="background:blue;">
+<$button message="tm-modal" param="$:/core/ui/ControlPanel/Modals/AddPlugins" tooltip={{$:/language/ControlPanel/Plugins/Add/Hint}} class="tc-btn-big-green" style="background:blue;">
 {{$:/core/images/download-button}} <<lingo Add/Caption>>
 </$button>