rename OVM_ETH symbol and name (#333)

Co-authored-by: smartcontracts <kelvinfichter@gmail.com>
Co-authored-by: Maurelian <maurelian@protonmail.ch>

packages/contracts/contracts/optimistic-ethereum/OVM/predeploys/OVM_ETH.sol

@@ -25,8 +25,8 @@ contract OVM_ETH is OVM_L2DepositedERC20 {
     ) 
         OVM_L2DepositedERC20(
             _l2CrossDomainMessenger,
-            "ovmWETH",
-            "oWETH"
+            "Ether",
+            "ETH"
         )
     {
         init(iOVM_L1TokenGateway(_l1ETHGateway));