[TASK] Correct description for QueryGenerator->getTreeList

Resolves: #84847
Releases: master, 8.7
Change-Id: Ica8a5cc234c6ea90a1964c87228136d06d9713ac
Reviewed-on: https://review.typo3.org/56787


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>