Issue Description:

https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html-single/installing_on_bare_metal/index#preparing-the-provisioner-node-for-openshift-install_ipi-install-installation-workflow

Point 7: Modify the user to add the libvirt group to the newly created user:
sudo usermod --append --groups libvirt <user>

The documentation uses the placeholder `<user>` when instructing users to add a user to the `libvirt` group, but does not define which user this refers to.

As written, it is ambiguous whether `<user>` refers to:

• `root`
• a newly created system user
• the `kni` user commonly used in examples
• or another account created by the installer

Suggested Documentation Update:

Replace the ambiguous instruction with an explicit example, such as:

sudo usermod --append --groups libvirt kni

and note that the user must log out and log back in for group membership to take effect.

Version-Release number of selected component (if applicable):

4.20.z