docs: add merkle distributor to deployment list (#545)

* docs: add merkle distributor to deployment list

* fix: remove proxy reference for distributor

Author: wadealexc

README.md

@@ -156,6 +156,7 @@ The current mainnet deployment is our M2 release. You can view the deployed cont
 | -------- | -------- | -------- | -------- | 
 | [`Eigen`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/mainnet/src/contracts/token/Eigen.sol) | [`0xec53bf9167f50cdeb3ae105f56099aaab9061f83`](https://etherscan.io/address/0xec53bf9167f50cdeb3ae105f56099aaab9061f83) | [`0x7ec3...700b`](https://etherscan.io/address/0x7ec354c84680112d3cff1544ec1eb19ca583700b) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.0/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
 | [`Backing Eigen`](https://github.com/Layr-Labs/eigenlayer-contracts/blob/mainnet/src/contracts/token/BackingEigen.sol) | [`0x83E9115d334D248Ce39a6f36144aEaB5b3456e75`](https://etherscan.io/address/0x83E9115d334D248Ce39a6f36144aEaB5b3456e75) | [`0xB91c...FFE3`](https://etherscan.io/address/0xB91c69Af3eE022bd0a59Da082945914BFDcEFFE3) | Proxy: [`[email protected]`](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.0/contracts/proxy/transparent/TransparentUpgradeableProxy.sol) |
+| [`SignedDistributor`](https://etherscan.io/address/0x035bdAeaB85E47710C27EdA7FD754bA80aD4ad02#code) | - | [`0x035b...ad02`](https://etherscan.io/address/0x035bdAeaB85E47710C27EdA7FD754bA80aD4ad02) | - |
 
 ###### Multisigs