New review comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/50251#discussion_r1626539935

Comment:
```suggestion
Users wishing to interact with incus system daemons should belong to
the `_incus-admin` and `_incus` groups. The root user should also be
assigned a range of subordinate user and group IDs to be mapped in
containers. For example, the command

    usermod --add-subuids 1000000-1065535 \
        --add-subgids 1000000-1065535 root
        
will assign a range of 65,536 IDs for users and groups.

Some container configurations may require that the `CGROUP_MODE`
variable in `/etc/rc.conf` be set to `unified`.
```