Update Tigervnc documentation in Fedora docs

Please take a look at the bug report that I created in Red Hat's Bugzilla about tigervnc-server configuration changes that are missing/needed in Fedora's documentation.

https://bugzilla.redhat.com/show_bug.cgi?id=2193384

https://docs.fedoraproject.org/en-US/fedora/latest/system-administrators-guide/infrastructure-services/TigerVNC/

Please also remove the fedora-docs component from Red Hat's Bugzilla if it's not being used.