Fix: Correct module path and clarify config structure in Medusa v2 Docs

[aqeebpathan]

What

This PR addresses an issue in the Medusa v2 documentation regarding the module creation example. The import paths were corrected to reflect the proper directory structure, ensuring clarity for users.

Closes #9220

Why

The previous documentation contained incorrect import paths that could lead to confusion for users attempting to create and configure modules. Clarifying the structure aims to prevent similar issues for future users.

How

• Updated the import statements in the documentation to go two levels up instead of three.
• Added clarification in the medusa-config.js example to indicate that the modules node should be a part of projectConfig.

Testing

While documentation changes do not require formal testing, I reviewed the updated paths and descriptions against the current code structure to ensure accuracy and clarity.

Note

This is my first contribution to an open source project, and I'm excited to contribute to the Medusa community!

[changeset-bot]

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Latest commit: 0b1e44b

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[vercel]

@aqeebpathan is attempting to deploy a commit to the medusajs Team on Vercel.

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[damien-thiesson]

LGTM

[olivermrbl]

Thanks for the contribution. Will let @shahednasser take a look at it!

[shahednasser]

Thanks for your contribution, just need a small change.

[shahednasser]

Suggested change

	```js title="medusa-config.js" highlights={[["4", "helloModuleService", "The key of the main service to be registered in the Medusa container."]]}
	```js title="medusa-config.js" highlights={[["7", "helloModuleService", "The key of the main service to be registered in the Medusa container."]]}

[shahednasser]

LGTM thanks!