[DOCS] Fix rendering warnings in changelog

No backport is needed as only the main
version of the changelog is rendered.

Resolves: #104026
Releases: main
Change-Id: I47e30da3b0ad0c372313419c84c1df4820a37fef
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84615


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>