Fixed readthedocs setup

[isaac-tfn]

Also experiment with whether file paths are needed at all in conf.py

Describe Changes

Task Checklist

• [ ] Have unittests been added (testing individual functions and their edge cases)
• [ ] Have integration tests been added (if applicable, to test modules of functionality)
• [ ] Updated RELEASE.md to reflect changes in PR
• [ ] Have new dependencies been added?
  • [ ] Have they been added to either requirements.txt or requirements_dev.txt.
  • [ ] Have they been added to setup.cfg

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (a7e1fb6) 59.23% compared to head (fd16440) 59.23%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #24 +/- ## ======================================= Coverage 59.23% 59.23% ======================================= Files 8 8 Lines 709 709 ======================================= Hits 420 420 Misses 289 289 ```

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