c35462f19b
When adding the support for file migration with the file: transport, we missed adding documentation for it. Signed-off-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Peter Xu <peterx@redhat.com> Link: https://lore.kernel.org/r/20240220224138.24759-2-farosas@suse.de Signed-off-by: Peter Xu <peterx@redhat.com>