Run md lint for root folders

[lchinglen]

Description of Changes

• Run md file lint for root folders also

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• CI/CD changes (updates to workflows, automation, or build processes)

Testing

• I have tested these changes locally
• I have added tests that prove my fix is effective or that my feature works
• Existing tests pass locally with my changes

Documentation

• I have updated the README.md (if applicable)
• I have updated the CHANGELOG.md (if applicable)
• My code follows the project's coding standards

Additional Context