[BUGFIX] Fix wrong string formatting

Fix wrong string formatting Resource Abstract Repository

Change-Id: I96a5c26d07410e8123ed8175183babaa019bf366
Resolves: #45467
Releases: 6.0
Releases: 6.1
Reviewed-on: https://review.typo3.org/18253
Reviewed-by: Wouter Wolters
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer