Fix wrap-up email

“Since this is a Private World and you weren't the creator, it is up to him/her to invite users to fill any vacated franchise spots. He/she has been notified of the new password for the upcoming season, so you may coordinate with him/her in regards to inviting others. If the creator will not be returning, you must coordinate with the creator and decide which returning user should take over that role.”

“Creator” should be changed to “commissioner".