added note on verifier address (#1233)

Author: benjamin852

src/content/docs/dev/amplifier/chain-integration/integrate-a-chain.mdx

@@ -299,7 +299,7 @@ Use the existing deployments for all three contracts, making note of the existin
    ```
 
 1. Instantiate the contract.
-
+    - NOTE: `verifier_address` is in reference to the previously deployed Voting Verifier Contract as opposed to the address of an external verifier.
    ```bash
    axelard tx wasm instantiate $GATEWAY_CODE_ID \
        '{