adapted scenario description for OpenPGP V3 keys

testing/tests/ikev1/net2net-pgp-v3/description.txt

@@ -1,5 +1,5 @@
 A connection between the subnets behind the gateways <b>moon</b> and <b>sun</b> is set up.
-The authentication is based on <b>OpenPGP keys</b>. Upon the successful
+The authentication is based on <b>OpenPGP V3 keys</b>. Upon the successful
 establishment of the IPsec tunnel, <b>leftfirewall=yes</b> automatically
 inserts iptables-based firewall rules that let pass the tunneled traffic.
 In order to test both tunnel and firewall, client <b>alice</b> behind gateway <b>moon</b>