[TASK] Improve description of config preset in install tool

Resolves: #52007
Releases: 6.2
Change-Id: I4c8bb6930040a9f3a5c5bc92c9638a98a2668daf
Reviewed-on: https://review.typo3.org/23832
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Philipp Gampe
Tested-by: Philipp Gampe
Reviewed-by: Jigal van Hemert
Tested-by: Jigal van Hemert