Fix typo and improve unified payment test name

Correct a minor typo in the unified_payment send test. The test name is
also updated to be more descriptive of the behavior being validated.

Author: chuksys

tests/integration_tests_rust.rs

@@ -1569,7 +1569,7 @@ async fn generate_bip21_uri() {
 }
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 1)]
-async fn unified_qr_send_receive() {
+async fn unified_send_receive_qr_uri() {
 	let (bitcoind, electrsd) = setup_bitcoind_and_electrsd();
 	let chain_source = TestChainSource::Esplora(&electrsd);
 
@@ -1619,7 +1619,7 @@ async fn unified_qr_send_receive() {
 				panic!("Expected Bolt12 payment but got Bolt11");
 			},
 			Ok(UnifiedPaymentResult::Onchain { txid: _ }) => {
-				panic!("Expected Bolt12 payment but get On-chain transaction");
+				panic!("Expected Bolt12 payment but got On-chain transaction");
 			},
 			Err(e) => {
 				panic!("Expected Bolt12 payment but got error: {:?}", e);