'?' for help is deprecated since commit c8057f951d "Support 'help' as
a synonym for '?' in command line options", v1.2.0. We neglected to
update output of qemu-img --help and the manual. Do that now.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220908130842.641410-1-armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>