f update comment to new reconnect api

Author: TheBlueMatt

lightning/src/ln/chanmon_update_fail_tests.rs

@@ -3189,7 +3189,8 @@ fn do_test_inverted_mon_completion_order(with_latest_manager: bool, complete_bc_
 		assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 
 		// Now reconnect B to both A and C. If the B <-> C commitment signed dance wasn't run to
-		// the end go ahead and do that, though the -2 in `reconnect_nodes` indicates that we
+		// the end go ahead and do that, though the
+		// `pending_responding_commitment_signed_dup_monitor` in `reconnect_args` indicates that we
 		// expect to *not* receive the final RAA ChannelMonitorUpdate.
 		if complete_bc_commitment_dance {
 			reconnect_nodes(ReconnectArgs::new(&nodes[1], &nodes[2]));