feat: Update MDX validation workflow

[kesku]

Description

Brief description of your contribution

Type of Contribution

• Example Tutorial
• Showcase Project
• Article/Integration Guide
• Documentation Update
• Bug Fix
• Other (please describe)

Update to GitHub Workflow

Checklist

• My code follows the cookbook's style guidelines
• I have included comprehensive documentation
• I have tested my code and it works as expected
• I have included all necessary dependencies and setup instructions
• My MDX file includes proper frontmatter (title, description, keywords)
• I have linked to any external repositories or live demos

Project Details

What problem does this solve?

Updates the MDX validation workflow for all future PRs, to prevent issues compiling on production

Testing

See commits on this PR

[vikvang]

lgtm