[BUGFIX] Fix typo in method name "enableShowMenoryAndTime"

Resolves: #63415

Change-Id: I9e0ea16b7fa842e2aeeb982fa9b30d2643a23406
Reviewed-on: http://review.typo3.org/34880
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>