docs: use allowlist

content/tutorials/custom-zk-chain/20.customizing-your-chain.md

@@ -7,11 +7,11 @@ description: Create a ZK chain with a custom ERC20 base token.
 One way you can customize your ZK chain is by changing the base token used for gas from ETH to an ERC20 token.
 Let's try customizing a new chain by using a custom ERC20 base token.
 
-With the initial release of ZK stack, base tokens must be whitelisted for use as a base token for a chain.
-The whitelisted addresses are stored and checked in the `BridgeHub` contract on the L1.
+With the initial release of ZK stack, custom ERC20 base tokens must be added to an allowlist for use as a base token for a chain.
+The allowed addresses are stored and checked in the `BridgeHub` contract on the L1.
 In the future it will be possible to add a new token in a permissionless process.
 
-For now, you have the ability to whitelist tokens in your local ecosystem.
+For now, you have the ability to add any tokens to the allowlist in your local ecosystem.
 
 The overall flow for setting up a local chain with a custom ERC20 base token looks like this: