Fix wording in readme

README.md

@@ -152,7 +152,7 @@ certificates and keys, with private keys and shared keys residing in the
 
 ### WireGuard
 
-[WireGuard] is a, relatively new, offering much simpler configuration than
+[WireGuard] is a, relatively new, VPN offering much simpler configuration than
 [OpenVPN] and a mesh-like architecture. It is included in the Linux kernel.
 
 WireGuard expects the configuration file name to match the interface name.