Starting with version 258, "systemd-udevd ignores OWNER=/GROUP=
settings with a non-system user/group specified in udev rules files".
Change the example udev rule to remove the explicit user assignment and
instead use the "uaccess" tag to auto-assign the logged-in user
permissions. As "uaccess" tags are processed using the 73-seat-late
udev rule, the KVMFR rule file name must precede it (i.e. should use
a lower ordinal value), so change the file name in the example to reflect that.
Credit goes to Discord user "w1kl4s" for bringing this systemd change
to our attention and assisting in testing.
virt-manager (or libvirt itself) tends to preserve outer quotation marks but explode inner double-quotes into '"' which is annoying.
this looks nicer when pasted into the XML editor and applied
Also used double-quotes for the QEMU <6.2 example for consistency
PS: added myself to AUTHORS since this is my first contribution
