Update configure-openvpn.sh (#2707)

Using "upd" as a value for NORDVPN_PROTOCOL results in an error.

Co-authored-by: Patrick Kishino <patrick.a.kishino@gmail.com>

openvpn/nordvpn/configure-openvpn.sh

@@ -7,7 +7,7 @@
 #
 # NORDVPN_COUNTRY: code or name
 # curl -s "https://api.nordvpn.com/v1/servers/countries" | jq --raw-output '.[] | [.code, .name] | @tsv'
-# NORDVPN_PROTOCOL: tcp or upd, tcp if none or unknown. Many technologies are not used as only openvpn_udp and openvpn_tcp are tested.
+# NORDVPN_PROTOCOL: tcp or udp, tcp if none or unknown. Many technologies are not used as only openvpn_udp and openvpn_tcp are tested.
 # Will request api with openvpn_<NORDVPN_PROTOCOL>.
 # curl -s "https://api.nordvpn.com/v1/technologies" | jq --raw-output '.[] | [.identifier, .name ] | @tsv' | grep openvpn
 # NORDVPN_CATEGORY: default p2p. not all countries have all combination of NORDVPN_PROTOCOL(technologies) and NORDVPN_CATEGORY(groups),
@@ -390,4 +390,4 @@ fi
 
 export OPENVPN_CONFIG=${selected}
 
-cd "${0%/*}"
+cd "${0%/*}"