help, comments: make clear that full-length node ID = public key

Generally, avoid using the "public key" terminology

src/rpc/consul.rs

@@ -148,7 +148,7 @@ impl ConsulDiscovery {
 				ret.push((pubkey, SocketAddr::new(ip, ent.service_port)));
 			} else {
 				warn!(
-					"Could not process node spec from Consul: {:?} (invalid IP or public key)",
+					"Could not process node spec from Consul: {:?} (invalid IP address or node ID/pubkey)",
 					ent
 				);
 			}

src/rpc/system.rs

@@ -57,7 +57,7 @@ pub const SYSTEM_RPC_PATH: &str = "garage_rpc/membership.rs/SystemRpc";
 pub enum SystemRpc {
 	/// Response to successfull advertisements
 	Ok,
-	/// Request to connect to a specific node (in <pubkey>@<host>:<port> format)
+	/// Request to connect to a specific node (in <pubkey>@<host>:<port> format, pubkey = full-length node ID)
 	Connect(String),
 	/// Ask other node its cluster layout. Answered with AdvertiseClusterLayout
 	PullClusterLayout,