docs: needed items from circle at migration (#145)

# 🤖 Linear

Closes OPT-196

README.md

@@ -149,6 +149,18 @@ And when you are ready to migrate to native USDC, run:
 yarn script:migrate:broadcast
 ```
 
+### What will circle need at migration?
+
+#### Circle will need the metadata from the original deployment of the USDC implementation that was used
+
+To do this you will need to go back to the `stablecoin-evm` github repo that the implementation was deployed from in order to extract the raw metadata from the compiled files. The compiled files are usually found in the `out/` or `artifacts/` folders. To extract the raw metadata you can run a command like this:
+
+```bash
+cat out/example.sol/example.json | jq -jr '.rawMetadata' > example.metadata.json
+```
+
+You will need to do this for both the token contract and any external libraries that get deployed with it, at the time of writing this these are `FiatTokenV2_2` and `SignatureChecker` but these are subject to change in the future.
+
 ## Licensing
 
 The primary license for the boilerplate is MIT, see [`LICENSE`](https://github.com/defi-wonderland/opUSDC/blob/main/LICENSE)

src/contracts/L2OpUSDCBridgeAdapter.sol

@@ -204,7 +204,7 @@ contract L2OpUSDCBridgeAdapter is IL2OpUSDCBridgeAdapter, OpUSDCBridgeAdapter {
   /**
    * @notice Receive the message from the other chain and mint the bridged representation for the user
    * @dev This function should only be called when receiving a message to mint the bridged representation
-   * @dev If the mint fails the funds might be recovered by calling withdrawBlacklistedFunds
+   * @dev If the mint fails the funds might be recovered by calling withdrawLockedFunds
    * @param _user The user to mint the bridged representation for
    * @param _spender The address that provided the tokens
    * @param _amount The amount of tokens to mint