Update docs/src/content/ignition/docs/guides/upgradeable-proxies.md

Co-authored-by: John Kane <[email protected]>

Author: zoeyTM

docs/src/content/ignition/docs/guides/upgradeable-proxies.md

@@ -278,6 +278,7 @@ Inside our `test` directory, we'll create a file called `ProxyDemo.js` (or `Prox
 
 ```typescript
 import { expect } from "chai";
+import { ignition, ethers } from "hardhat";
 
 import ProxyModule from "../ignition/modules/ProxyModule";
 import UpgradeModule from "../ignition/modules/UpgradeModule";