Add symbols

app/assets/javascripts/filtered_search/dropdown_hint.js.es6

@@ -37,19 +37,19 @@
       const dropdownData = [{
         icon: 'fa-pencil',
         hint: 'author:',
-        tag: '<author>',
+        tag: '<@author>',
       }, {
         icon: 'fa-user',
         hint: 'assignee:',
-        tag: '<assignee>',
+        tag: '<@assignee>',
       }, {
         icon: 'fa-clock-o',
         hint: 'milestone:',
-        tag: '<milestone>',
+        tag: '<%milestone>',
       }, {
         icon: 'fa-tag',
         hint: 'label:',
-        tag: '<label>',
+        tag: '<~label>',
       }];
 
       this.droplab.changeHookList(this.hookId, this.dropdown, [droplabFilter], this.config);