Update widget.stub

Author: imanghafoori1

stubs/widget.stub

@@ -13,7 +13,7 @@ namespace DummyNamespace;
  *  | public $cacheLifeTime = 0;   (use it to override the default value in config file)
  *  | public $contextAs = '$data'; (Default is : '$data')
  *  | public $template; (optional) (By default it looks for the view file generated by artisan)
- *  | public $cacheTags = []; (optional) (Not available for 'file system' cache driver)
+ *  | public $cacheTags = []; (optional) (Available for all cache driver)
  *  |--------------------------------------------------------------------------
  */
 class DummyClass