[BUGFIX] Use https:// in comments and docs

Common URLs like typo3.org, tools.ietf.org or php.net are nowadays
available as HTTPS, however some places in TYPO3 still use http://
as reference. This should be streamlined to resemble https:// everywhere.

Resolves: #91581
Releases: master, 10.4
Change-Id: I76b5211f7e14cab0c6d190059d2be761bc664b53
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64733


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Björn Jacob <bjoern.jacob@tritum.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Björn Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Benni Mack <benni@typo3.org>