Commit 4e99f4b12c0e dropped simple unions and updated most
documentation accordingly, but in one case we still claim that
there are "two flavors of unions".
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Message-Id: <20220420153408.243584-2-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>