lnwire: update anchor bit to spec

lnwire/features.go

@@ -112,12 +112,12 @@ const (
 	// AnchorsRequired is a required feature bit that signals that the node
 	// requires channels to be made using commitments having anchor
 	// outputs.
-	AnchorsRequired FeatureBit = 1336
+	AnchorsRequired FeatureBit = 20
 
 	// AnchorsRequired is an optional feature bit that signals that the
 	// node supports channels to be made using commitments having anchor
 	// outputs.
-	AnchorsOptional FeatureBit = 1337
+	AnchorsOptional FeatureBit = 21
 
 	// maxAllowedSize is a maximum allowed size of feature vector.
 	//