message: Put a warning that this info is no longer valid
  Because Goerli is on bedrock.
diff: - **Chain ID**: 420
  - **Public RPC**: https://goerli.optimism.io
  - **Block Explorer**: https://goerli-optimism.etherscan.io/
  +
  +**Note:** This list is out of date, now that Goerli is on bedrock.
  +[The valid list is here](https://github.com/ethereum-optimism/optimism/tree/develop/packages/contracts-bedrock/deployments/goerli).
  +
  ## Layer 1 Contracts
  <table>
  <tr>
  