[TASK] TYPO3 Coding Guidelines - You must use "/**" style comments for a class comment

Change-Id: Icb461b4b39c04b03d393a87738dc14adf40d0ae9
Resolves: #54683
Reviewed-on: https://review.typo3.org/26607
Reviewed-by: Alex Kellner
Tested-by: Alex Kellner