[BUGFIX] Install: Typo in category of extension configuration

Resolves: #83620
Releases: master
Change-Id: I903207c22daa20312447c18d6b9ddd8f1cd61a5a
Reviewed-on: https://review.typo3.org/55416


Reviewed-by: Stephan Großberndt <stephan@grossberndt.de>
Reviewed-by: Riccardo De Contardi <erredeco@gmail.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: TYPO3com <no-reply@typo3.com>