Link to User Guide is not working

[nihaase]

The link in the readme to the User Guide is not working anymore.

[AVHopp]

Thanks for reporting 👍 @AdrianSosic already created a PR fixing various bugs and wrong links in the README: #827 Can you maybe point us to exactly the ling that is not working for you?

[AdrianSosic]

Should be the one on top of the page --> now fixed on main