update 'wiki/TorRelayGuide/OpenBSD'
suggestion to be used as 'wiki/TorRelayGuide/OpenBSD' steps from https://wiki.torbsd.org/doku.php?id=pt:guides_basic_relay_config
suggestion to be used as 'wiki/TorRelayGuide/OpenBSD' steps from https://wiki.torbsd.org/doku.php?id=pt:guides_basic_relay_config