systemd-timesyncd prevents installation of linuxmuster-fileserver

[michaelkohls]

When following the Instructions in Chapter https://docs.linuxmuster.net/de/latest/installation/install-from-scratch/basis_file_server.html#fileserver-installation
the Installation fails with following error:

The package linuxmuster-fileserver depends on installing ntpsec which conflicts with systemd-timesyncd
The documentation should advise to deinstall systemd-timesyncd with "sudo apt purge systemd-timesyncd".