Fixed ABI

Author: huperts

pages/builders/app-developers/contracts/system-contracts.mdx

@@ -90,7 +90,7 @@ import {
 } from '@eth-optimism/contracts-ts'
 
 // Note that the address is keyed by chain ID!
-console.log(l2OutputOracleAddresses[10], abi)
+console.log(l2OutputOracleAddresses[10], l2OutputOracleProxyABI)
 ```
 ### Interacting with the Contract
 You can then feed this address and ABI into your favorite web3 library to interact with the contract.