docs: update 02.usage.md

[AnzhiZhang]

🔗 Linked issue

#3395

❓ Type of change

• 📖 Documentation (updates to the documentation, readme or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This resolves ambiguous i18n.config.ts path in the documentation usage page.

resolve #3395

📝 Checklist

• I have linked an issue or discussion.
• I have added tests (if possible).
• I have updated the documentation accordingly.

[AnzhiZhang]

It would be better to update the error message in layers.ts as well. Please let me know if you want me to change it.

[basilky]

I was wondering why the configuration in the project root is not getting read. The file path shown in error is existing in the project root

[AnzhiZhang]

I was wondering why the configuration in the project root is not getting read. The file path shown in error is existing in the project root

Beacuse it is reading the i18nDir, see details in the issue.

[BobbieGoede]

Thank you for contributing! 🙏

[AnzhiZhang]

Thank you for contributing! 🙏

Thank you. Is there any plan to update the warning message mentioned above?

[BobbieGoede]

@AnzhiZhang
Just opened #3398, this changes the log to print the actual directory we're checking, instead of the layer's root directory.