docs: fix example minimal local debug config

[krystianfowler]

Category

• Bug fix?
• New feature?
• New sample?
• Documentation update?

What's in this Pull Request?

Setting up the repository for the first time I noticed that using the minimal settings from the current docs gives the following error:

1. "before all" hook: setup in "{root}":
   ReferenceError: module is not defined in ES module scope
   This file is being treated as an ES module because it has a '.js' file extension and '/Users/krystianfowler/projects/pnpjs/package.json' contains "type": "module". To treat it as a CommonJS script, rename it to use the '.cjs' file extension.
   at file:///Users/krystianfowler/projects/pnpjs/settings.js:72:1
   at ModuleJob.run (node:internal/modules/esm/module_job:194:25)

This PR converts the minimal settings example to ES module so that the issue above doesn't occur.

[patrick-rodgers]

Can you share the steps to repro the issue you aim to fix with this PR?

[bcameron1231]

Thank you!