[DOCS] Revise changelogs for v13.1 release

Resolves: #103675
Releases: main
Change-Id: Id576952b1390d5727643eb6c535ce56c50a20831
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83935


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>