[TASK] Fix Changelog associated with extension scanner for services

- Use different Changelog entry in extension scanner for
  AbstractAuthenticationService and AuthenticationService
- Add links to Changelog
- Change title in Changelog

Resolves: #88005
Releases: master, 9.5

Change-Id: I6852a7511bda74bee398ef86b8ca59f7d7454e5a
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60340


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>