update names

ethereum/contracts/zksync/facets/Mailbox.sol

@@ -330,13 +330,14 @@ contract MailboxFacet is Base, IMailbox {
             refundRecipient = AddressAliasHelper.applyL1ToL2Alias(refundRecipient);
         }
 
-        address l1TokenAddress = address($(L1_NATIVE_TOKEN_ADDRESS));
+        // The address of the token that is used in the L2 as native.
+        address nativeTokenAddress = address($(L1_NATIVE_TOKEN_ADDRESS));
         // Check balance and allowance.
-        require(IERC20(l1TokenAddress).balanceOf(msg.sender) >= _amount, "Not enough balance");
-        require(IERC20(l1TokenAddress).allowance(msg.sender, address(this)) >= _amount, "Not enough allowance");
+        require(IERC20(nativeTokenAddress).balanceOf(msg.sender) >= _amount, "Not enough balance");
+        require(IERC20(nativeTokenAddress).allowance(msg.sender, address(this)) >= _amount, "Not enough allowance");
 
         // Transfer tokens to the contract.
-        IERC20(l1TokenAddress).safeTransferFrom(msg.sender, address(this), _amount);
+        IERC20(nativeTokenAddress).safeTransferFrom(msg.sender, address(this), _amount);
 
         params.sender = _sender;
         params.txId = s.priorityQueue.getTotalPriorityTxs();