f - docs just before

Author: alecchendev

lightning/src/ln/functional_tests.rs

@@ -2214,7 +2214,7 @@ fn channel_reserve_in_flight_removes() {
 #[test]
 fn test_fail_back_before_backwards_timeout() {
 	// Test that we fail an HTLC upstream if we are still waiting for confirmation downstream
-	// by the time the upstream timeout expires
+	// just before the upstream timeout expires
 	let chanmon_cfgs = create_chanmon_cfgs(3);
 	let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
 	let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);