Add link to confdb_keys in corosync-objctl mpage

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Fabio M. Di Nitto <fdinitto@redhat.com>

man/corosync-objctl.8

@@ -114,7 +114,8 @@ $ corosync-objctl -d objOne
 Prove that is gone.
 $ corosync-objctl objOne
 .SH SEE ALSO
-.BR confdb_initialize (3),
+.BR confdb_keys (8),
+.BR confdb_initialize (3)
 .SH AUTHOR
 Angus Salkeld
 .PP