[BUGFIX] Fix spelling errors in ext:extbase

Resolves: #90590
Releases: master
Change-Id: Ieeef9bb93804f0de090fd787eb143c913b1b19a0
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63496


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