Update smart-contracts/dev-environments/hardhat/deploy-a-contract.md

Co-authored-by: Nicolás Hussein <[email protected]>

Author: kapetan3sid

smart-contracts/dev-environments/hardhat/deploy-a-contract.md

@@ -56,7 +56,7 @@ This guide will use the Local Development Node as the target network. Here's how
 Hardhat Ignition uses this module to orchestrate the deployment:
 
     ```bash
-    npx hardhat ignition deploy ./ignition/modules/Lock.js --network polkadotHubLocal
+    npx hardhat ignition deploy ./ignition/modules/Lock.js --network polkadotTestNet
     ```
 
 ## Interaction with Your Contract