multi: fix various typos in comments

chainntnfs/bitcoindnotify/bitcoind.go

@@ -497,7 +497,7 @@ func (b *BitcoindNotifier) confDetailsFromTxIndex(txid *chainhash.Hash,
 	// then we may be able to dispatch it immediately.
 	tx, err := b.chainConn.GetRawTransactionVerbose(txid)
 	if err != nil {
-		// If the transaction lookup was succesful, but it wasn't found
+		// If the transaction lookup was successful, but it wasn't found
 		// within the index itself, then we can exit early. We'll also
 		// need to look at the error message returned as the error code
 		// is used for multiple errors.

chainntnfs/btcdnotify/btcd.go

@@ -566,7 +566,7 @@ func (b *BtcdNotifier) confDetailsFromTxIndex(txid *chainhash.Hash,
 	// then we may be able to dispatch it immediately.
 	tx, err := b.chainConn.GetRawTransactionVerbose(txid)
 	if err != nil {
-		// If the transaction lookup was succesful, but it wasn't found
+		// If the transaction lookup was successful, but it wasn't found
 		// within the index itself, then we can exit early. We'll also
 		// need to look at the error message returned as the error code
 		// is used for multiple errors.

chainntnfs/txconfnotifier.go

@@ -211,7 +211,7 @@ func (tcn *TxConfNotifier) UpdateConfDetails(txid chainhash.Hash,
 	ntfn.details = details
 
 	// Now, we'll examine whether the transaction of this notification
-	// request has reched its required number of confirmations. If it has,
+	// request has reached its required number of confirmations. If it has,
 	// we'll disaptch a confirmation notification to the caller.
 	confHeight := details.BlockHeight + ntfn.NumConfirmations - 1
 	if confHeight <= tcn.currentHeight {