f fix comment

Author: TheBlueMatt

lightning/src/ln/chanmon_update_fail_tests.rs

@@ -3103,9 +3103,9 @@ fn test_blocked_chan_preimage_release() {
 }
 
 fn do_test_inverted_mon_completion_order(with_latest_manager: bool, complete_bc_commitment_dance: bool) {
-	// When we forward a payment and receive an `update_fulfill_htlc` message from the downstream
-	// channel, we immediately claim the HTLC on the upstream channel, before even doing a
-	// `commitment_signed` dance on the downstream channel. This implies that our
+	// When we forward a payment and receive `update_fulfill_htlc`+`commitment_signed` messages
+	// from the downstream channel, we immediately claim the HTLC on the upstream channel, before
+	// even doing a `commitment_signed` dance on the downstream channel. This implies that our
 	// `ChannelMonitorUpdate`s are generated in the right order - first we ensure we'll get our
 	// money, then we write the update that resolves the downstream node claiming their money. This
 	// is safe as long as `ChannelMonitorUpdate`s complete in the order in which they are