Update docblock

src/View/Helper/TimeHelper.php

@@ -46,8 +46,8 @@ class TimeHelper extends Helper
      *
      * Will use the provided timezone, or default output timezone if defined.
      *
-     * @param null|string|DateTimeZone $timezone The override timezone if applicable.
-     * @return null|string|DateTimeZone The chosen timezone or null.
+     * @param null|string|\DateTimeZone $timezone The override timezone if applicable.
+     * @return null|string|\DateTimeZone The chosen timezone or null.
      */
     protected function _getTimezone($timezone)
     {