[DOCS] Use GitHub permalink to CKEditor Base.yaml

Releases: main, 12.4
Resolves: #103984
Change-Id: I8c105e3c3cdb37991e91015d8929d022224d8dea
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84510


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Lina Wolf <112@linawolf.de>
Reviewed-by: Garvin Hicking <gh@faktor-e.de>
Tested-by: Lina Wolf <112@linawolf.de>
Tested-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>