[TASK] Added new question to FAQ

How to change the long title in content wizard for DCE group

Change-Id: I80eee7f9c813dfd96488a493a2e243045e1c71a6
Reviewed-on: http://review.typo3.org/31829
Reviewed-by: Armin Ruediger Vieweg <armin@v.ieweg.de>
Tested-by: Armin Ruediger Vieweg <armin@v.ieweg.de>