multi: fix spelling mistakes

lnrpc/autopilotrpc/driver.go

@@ -35,7 +35,7 @@ func createNewSubServer(configRegistry lnrpc.SubServerConfigDispatcher) (
 	}
 
 	// Before we try to make the new service instance, we'll perform
-	// some sanity checks on the arguments to ensure taht they're useable.
+	// some sanity checks on the arguments to ensure that they're useable.
 	switch {
 	case config.Manager == nil:
 		return nil, nil, fmt.Errorf("Manager must be set to create " +