f test comment and check

Author: valentinewallace

lightning/src/routing/scoring.rs

@@ -2908,9 +2908,11 @@ mod tests {
 			final_value_msat: recipient_hop.fee_msat,
 		});
 
+		// More knowledge gives higher confidence (256, 768), meaning a lower penalty.
 		scorer.payment_path_failed(&path, 42);
 		path.blinded_tail.as_mut().unwrap().final_value_msat = 256;
 		scorer.payment_path_failed(&path, 43);
 		assert_eq!(scorer.channel_penalty_msat(42, &source, &target, usage), 281);
+		assert_eq!(scorer.channel_penalty_msat(43, &source, &target, usage), 300);
 	}
 }