f! doc fixed claim id

Author: wpaulino

lightning/src/chain/onchaintx.rs

@@ -752,6 +752,9 @@ impl<ChannelSigner: WriteableEcdsaChannelSigner> OnchainTxHandler<ChannelSigner>
 			) {
 				req.set_timer(new_timer);
 				req.set_feerate(new_feerate);
+				// Once a pending claim has an id assigned, it remains fixed until the claim is
+				// satisfied, regardless of whether the claim switches between different variants of
+				// `OnchainClaim`.
 				let claim_id = match claim {
 					OnchainClaim::Tx(tx) => {
 						log_info!(logger, "Broadcasting onchain {}", log_tx!(tx));