chore: update broken link to nextjs example

[la55u]

Overview

Fixes #(issue)

Notes for reviewer

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[tothandras]

Thank you! Unfortunately, it seems like it's still broken. It should be customer-dashboard-nextjs.