multi: fix typos in comments

lnwire/channel_id.go

@@ -27,7 +27,7 @@ const (
 type ChannelID [32]byte
 
 // ConnectionWideID is an all-zero ChannelID, which is used to represent a
-// message intended for all channels to to specific peer.
+// message intended for all channels to specific peer.
 var ConnectionWideID = ChannelID{}
 
 // String returns the string representation of the ChannelID. This is just the

lnwire/netaddress.go

@@ -22,7 +22,7 @@ type NetAddress struct {
 	// the node.
 	IdentityKey *btcec.PublicKey
 
-	// Address is is the IP address and port of the node. This is left
+	// Address is the IP address and port of the node. This is left
 	// general so that multiple implementations can be used.
 	Address net.Addr
 

lnwire/pong.go

@@ -11,7 +11,7 @@ type PongPayload []byte
 // Pong message.
 type Pong struct {
 	// PongBytes is a set of opaque bytes that corresponds to the
-	// NumPongBytes defined in the ping message that this this pong is
+	// NumPongBytes defined in the ping message that this pong is
 	// replying to.
 	PongBytes PongPayload
 }