Fix documented return value of Date#UTC.

 * @param {Number} min An integer between 0 and 59 representing the minutes.

 * @param {Number} sec An integer between 0 and 59 representing the seconds.

 * @param {Number} ms An integer between 0 and 999 representing the milliseconds.

 * @return {Date} Number of milliseconds since January 1, 1970, 00:00:00, universal time.

 * @return {Number} Number of milliseconds since January 1, 1970, 00:00:00, universal time.

 */

//Methods