multi: fix canceled spelling

contractcourt/chain_arbitrator.go

@@ -34,7 +34,7 @@ type ResolutionMsg struct {
 	// commitment trace.
 	HtlcIndex uint64
 
-	// Failure will be non-nil if the incoming contract should be cancelled
+	// Failure will be non-nil if the incoming contract should be canceled
 	// all together. This can happen if the outgoing contract was dust, if
 	// if the outgoing HTLC timed out.
 	Failure lnwire.FailureMessage

contractcourt/channel_arbitrator_test.go

@@ -1785,7 +1785,7 @@ func TestChannelArbitratorDanglingCommitForceClose(t *testing.T) {
 			)
 
 			// Now that we've sent this signal, we should have that
-			// HTLC be cancelled back immediately.
+			// HTLC be canceled back immediately.
 			select {
 			case msgs := <-chanArbCtx.resolutions:
 				if len(msgs) != 1 {

contractcourt/htlc_outgoing_contest_resolver.go

@@ -152,7 +152,7 @@ func (h *htlcOutgoingContestResolver) Resolve() (ContractResolver, error) {
 			return h.claimCleanUp(commitSpend)
 
 		case <-h.Quit:
-			return nil, fmt.Errorf("resolver cancelled")
+			return nil, fmt.Errorf("resolver canceled")
 		}
 	}
 }