In the past year a lot of links have changed, especially in documentation
which is now reflected in the README.md and INSTALL.md files.

Resolves: #88956
Releases: master, 9.5
Change-Id: I754384bffb924340c59e18536edb41883ec279cb
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63535


Reviewed-by: Daniel Siepmann <coding@daniel-siepmann.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Benni Mack <benni@typo3.org>