Update main readme for users (not admins)
Separate what is important for those who only want to use the software, not set it up.
Bitte beachtet dass wir Änderungen am SSH Zugriff auf Repositories vornehmen und ihr aktiv werden müsst falls ihr den SSH Zugriff nutzt. Weitere Informationen: https://cs.uni-paderborn.de/rechnerbetrieb-irb/dienste/git/#c883511
Please be advised that we will make changes to repository access via SSH and you will need to take action if you are using the ssh access. More information: https://cs.uni-paderborn.de/en/irb/services/git/#c883511
Separate what is important for those who only want to use the software, not set it up.