[DOCS] Fix erroneous example in feature rst #94117

Resolves: #102060
Releases: main, 12.4
Change-Id: I22acca2ecdff371a88c3cf060ac5c6707735bf73
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81292


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>