p2p/nat: fix typos in comments (ethereum#29536)

Author: dbadoy

p2p/nat/natpmp.go

@@ -26,7 +26,7 @@ import (
 	natpmp "github.com/jackpal/go-nat-pmp"
 )
 
-// natPMPClient adapts the NAT-PMP protocol implementation so it conforms to
+// pmp adapts the NAT-PMP protocol implementation so it conforms to
 // the common interface.
 type pmp struct {
 	gw net.IP

p2p/nat/natupnp.go

@@ -205,8 +205,8 @@ func discoverUPnP() Interface {
 	return nil
 }
 
-// finds devices matching the given target and calls matcher for all
-// advertised services of each device. The first non-nil service found
+// discover finds devices matching the given target and calls matcher for
+// all advertised services of each device. The first non-nil service found
 // is sent into out. If no service matched, nil is sent.
 func discover(out chan<- *upnp, target string, matcher func(goupnp.ServiceClient) *upnp) {
 	devs, err := goupnp.DiscoverDevices(target)