message: test: Fix an RPC example test
diff: @@ -663,6 +663,7 @@ fn mock_rpc_response(example: &RpcTestExample, response: &mut RpcTestResponse) {
  "get_blockchain_info" => {
  response.result["chain"] = example.response.result["chain"].clone()
  }
  + "send_alert" => response.error["data"] = example.response.error["data"].clone(),
  _ => {}
  }
  }
  