Change URLs to new data docs

[megcrenshaw]

Levels were referencing the old path to data_docs. This PR fixes that. I did not go into the levels to test, but I did check that the new URLs are going to the right place.

Levels with old path:

By the end:

Links

Testing story

Deployment strategy

Follow-up work

Privacy

Security

Caching

PR Checklist:

• Tests provide adequate coverage
• Privacy and Security impacts have been assessed
• Code is well-commented
• New features are translatable or updates will not break translations
• Relevant documentation has been added or updated
• User impact is well-understood and desirable
• Pull Request is labeled appropriately
• Follow-up work items (including potential tech debt) are tracked and linked