updates from review

pages/builders/chain-operators/tools/op-deployer.mdx

@@ -97,9 +97,13 @@ Now that you've created your intent file, you can apply it to your chain. Run th
 op-deployer apply --workdir .deployer --l1-rpc-url <rpc-url> --private-key <private key hex>
 ```
 
+Using a hardware wallet is currently not supported, but this deployer key has no privileges so an ephemeral hot wallet
+can be used.
+
 This command will deploy the OP Stack to L1. It will deploy all L2s specified in the intent file. Superchain
 configuration will be set to the Superchain-wide defaults - i.e., your chain will be opted into the Superchain pause
-and will use the same protocol versions address as other chains on the Superchain.
+and will use the same [protocol versions](https://github.com/ethereum-optimism/specs/blob/main/specs/protocol/superchain-upgrades.md)
+address as other chains on the Superchain.
 
 ### Generating Genesis Files