added code improvement

lib/modules/ScheduleWidget.php

@@ -43,7 +43,7 @@ class ScheduleWidget extends CorePlugin implements PortalPlugin
             $GLOBALS['user']->id,
             false,
             false,
-            $days = array(0,1,2,3,4)
+            $days = [0, 1, 2, 3, 4]
         );
 
         $template = $GLOBALS['template_factory']->open('shared/string');