docs: prep for v2 documentation (#6710)

This PR includes documentation that preps for v2 docs (but doesn't introduce new docs).

_Note: The number of file changes in the PR is due to find-and-replace within the `references` which is unavoidable. Let me know if I should move it to another PR._

## Changes

- Change Medusa version in base OAS used for v2.
- Fix to docblock generator related to not catching all path parameters.
- Added typedoc plugin that generates ER Diagrams, which will be used specifically for data model references in commerce modules.
- Changed OAS tool to output references in `www/apps/api-reference/specs-v2` directory when the `--v2` option is used.
- Added a version switcher to the API reference to switch between V1 and V2. This switcher is enabled by an environment variable, so it won't be visible/usable at the moment.
- Upgraded docusaurus to v3.0.1
- Added new Vale rules to ensure correct spelling of Medusa Admin and module names.
- Added new components to the `docs-ui` package that will be used in future documentation changes.

www/apps/docs/content/contribution/_admin-translations.md

@@ -5,11 +5,11 @@ sidebar_position: 2
 
 # Contribute by Translating Admin
 
-In this document, you'll learn how you can contribute to Medusa by translating the Medusa admin.
+In this document, you'll learn how you can contribute to Medusa by translating the Medusa Admin.
 
 ## Overview
 
-The Medusa admin supports multiple languages, with the default being English. To ensure a wide support for different languages, your contribution by translating to other languages you're fluent in is highly appreciated.
+The Medusa Admin supports multiple languages, with the default being English. To ensure a wide support for different languages, your contribution by translating to other languages you're fluent in is highly appreciated.
 
 This type of contribution is a no-code contribution, meaning you don't need advanced technical skills to contribute.