chore: fix comment on outbound bridge router contract

Author: garythung

packages/arb-bridge-peripherals/contracts/tokenbridge/arbitrum/gateway/L2GatewayRouter.sol

@@ -24,7 +24,7 @@ import "../L2ArbitrumMessenger.sol";
 import "arb-bridge-eth/contracts/libraries/AddressAliasHelper.sol";
 
 /**
- * @title Handles withdrawals from Ethereum into Arbitrum. Tokens are routered to their appropriate L2 gateway (Router itself also conforms to the Gateway interface).
+ * @title Handles withdrawals from Arbitrum into Ethereum. Tokens are routered to their appropriate L2 gateway (Router itself also conforms to the Gateway interface).
  * @notice Router also serves as an L2-L1 token address oracle.
  */
 contract L2GatewayRouter is GatewayRouter, L2ArbitrumMessenger {