[BUGFIX] Fix spelling errors in several extensions

Fixes several spelling errors in the extensions "indexed_search",
"install", "linkvalidator", "lowlevel", "recordlist", and "redirects".

Resolves: #90591
Releases: master
Change-Id: I9db51fe0f36c854237dd72f5aac47402cca72278
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63497


Tested-by: Björn Jacob <bjoern.jacob@tritum.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Alexander Schnitzler <git@alexanderschnitzler.de>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Björn Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Alexander Schnitzler <git@alexanderschnitzler.de>
Reviewed-by: Susanne Moog <look@susi.dev>