fix: apply suggestions from code review

Co-authored-by: Tomás Migone <[email protected]>

Author: pcarranzav

contracts/gateway/ICallhookReceiver.sol

@@ -2,7 +2,7 @@
 
 /**
  * @title Interface for contracts that can receive callhooks through the Arbitrum GRT bridge
- * @dev Any contract that can receive a callhook on L2, send through the bridge from L1, must
+ * @dev Any contract that can receive a callhook on L2, sent through the bridge from L1, must
  * be whitelisted by the governor, but also implement this interface that contains
  * the function that will actually be called by the L2GraphTokenGateway.
  */

contracts/l2/gateway/L2GraphTokenGateway.sol

@@ -241,8 +241,6 @@ contract L2GraphTokenGateway is GraphTokenGateway, L2ArbitrumMessenger, Reentran
                 bytes memory gatewayData;
                 (gatewayData, callhookData) = abi.decode(_data, (bytes, bytes));
             }
-            // Callhooks shouldn't revert, but if they do:
-            // we revert, so that the retryable ticket can be re-attempted
             ICallhookReceiver(_to).onTokenTransfer(_from, _amount, callhookData);
         }