[BUGFIX] Fix broken link to anchor

Due to wrong quoting, the links to anchors are broken.

Resolves: #66854
Releases: master, 6.2
Change-Id: I4a52dc6cead27fc499e93618dfaefd824ebd525c
Reviewed-on: http://review.typo3.org/39363


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>