Small verbiage fix

mainnet/2024-02-23-transfer-op/README.md

@@ -7,7 +7,7 @@ Status: READY TO SIGN
 
 ## Objective
 
-When Base launched, Optimism granted a share of OP tokens to Coinbase. The token distribution occurs onchain, and vests over a period of 6 years, with the first vesting event in July 2024. A smart contract handles the logic to make the tokens available for distribution as they vest. This smart contract (the "Smart Escrow Contract") also receives OP tokens 1 year before they vest and stores them until vesting. However, since the Smart Escrow contract was not ready upon Base launch, the existing OP tokens are being stored in a 2-of-2 multisig with CB & OP signers (identical to the multisig used for Base's upgrade keys, except on the Optimism network). 
+When Base launched, Optimism granted a share of OP tokens to Coinbase. The token distribution occurs onchain, and vests over a period of 6 years, with the first vesting event in July 2024. A smart contract handles the logic to make the tokens available for distribution as they vest. This smart contract (the "Smart Escrow Contract") also receives OP tokens 1 year before they vest and stores them until vesting. However, since the Smart Escrow contract was not ready upon Base launch, the existing OP tokens are being stored in a 2-of-2 multisig with CB & OP signers (similar to the multisig used for Base's upgrade keys, except on the Optimism network). 
 
 Now that the Smart Escrow contract is live, this task moves any existing OP tokens from the 2-of-2 multisig to the Smart Escrow contract.