docs: minor layout tweaks to README.md (#392)

Author: varunsrin

README.md

@@ -12,17 +12,11 @@ This repository contains all the contracts deployed by the [Farcaster protocol](
 
 Read the [docs](docs/docs.md) for more details on how the contracts work.
 
-## Contributing
-
-Please see the [contributing guidelines](CONTRIBUTING.md).
-
 ## Deployments
 
-### v3 Contracts
+The [v3 contracts](https://github.com/farcasterxyz/contracts/releases/tag/v3.0.0) are deployed across both OP Mainnet and Ethereum Mainnet.
 
-The [v3 contracts](https://github.com/farcasterxyz/contracts/releases/tag/v3.0.0) are deployed on both Optimism mainnet and Ethereum mainnet.
-
-The L2 contracts can be found at the following addresses on Optimism mainnet:
+### OP Mainnet
 
 | Contract                  | Address                                                                                                                          |
 | ------------------------- | -------------------------------------------------------------------------------------------------------------------------------- |
@@ -33,25 +27,19 @@ The L2 contracts can be found at the following addresses on Optimism mainnet:
 | SignedKeyRequestValidator | [0x00000000fc700472606ed4fa22623acf62c60553](https://optimistic.etherscan.io/address/0x00000000fc700472606ed4fa22623acf62c60553) |
 | RecoveryProxy             | [0x00000000fcd5a8e45785c8a4b9a718c9348e4f18](https://optimistic.etherscan.io/address/0x00000000fcd5a8e45785c8a4b9a718c9348e4f18) |
 
-The L1 contract can be found at the following address on Ethereum mainnet:
-
-| Contract                  | Address                                                                                                                          |
-| ------------------------- | -------------------------------------------------------------------------------------------------------------------------------- |
-| FnameResolver             | Not yet deployed                                                                                                                 |
-
-### v2 Contracts
+### ETH Mainnet
 
-The [v2 contracts](https://github.com/farcasterxyz/contracts/releases/tag/v2.0.0) can be found at the following addresses on L1 Goerli:
-
-| Contract       | Address                                                                                                                      |
-| -------------- | ---------------------------------------------------------------------------------------------------------------------------- |
-| IdRegistry     | [0xda107a1caf36d198b12c16c7b6a1d1c795978c42](https://goerli.etherscan.io/address/0xda107a1caf36d198b12c16c7b6a1d1c795978c42) |
-| NameRegistry   | [0xe3be01d99baa8db9905b33a3ca391238234b79d1](https://goerli.etherscan.io/address/0xe3be01d99baa8db9905b33a3ca391238234b79d1) |
-| BundleRegistry | [0xdb647193df79ce69b5d34549aae98d519223f682](https://goerli.etherscan.io/address/0xdb647193df79ce69b5d34549aae98d519223f682) |
+| Contract      | Address          |
+| ------------- | ---------------- |
+| FnameResolver | Not yet deployed |
 
 ## Audits
 
-[0xMacro](https://0xmacro.com/) reviewed the v3 contracts.
+The [v3 contracts](https://github.com/farcasterxyz/contracts/releases/tag/v3.0.0) contracts have been reviewed by [0xMacro](https://0xmacro.com/):
+
 - [Report A-1](https://0xmacro.com/library/audits/farcaster-1.html)
 - [Report A-2](https://0xmacro.com/library/audits/farcaster-2.html)
 
+## Contributing
+
+Please see the [contributing guidelines](CONTRIBUTING.md).