Update datatables-extensions.js

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared/wwwroot/libs/abp/aspnetcore-mvc-ui-theme-shared/datatables/datatables-extensions.js

@@ -33,7 +33,7 @@ var abp = abp || {};
 
         var _createDropdownItem = function (record, fieldItem, tableInstance) {
             var $li = $('<li/>');
-            var $a = $('<a/>');
+            var $a = $('<a/>').addClass('dropdown-item');
 
             if (fieldItem.displayNameHtml) {
                 $a.html(fieldItem.text);