docs: use canonical-sphinx

[tigarmo]

• [ ] Have you followed the guidelines for contributing?
• [ ] Have you signed the CLA?
• [ ] Have you successfully run tox?

---

[codecov[bot]]

Codecov Report

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

Project coverage is 90.17%. Comparing base (e5e4077) to head (e47979d).

:exclamation: Current head e47979d differs from pull request most recent head a6e334a. Consider uploading reports for the commit a6e334a to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #106 +/- ## ======================================= Coverage 90.17% 90.17% ======================================= Files 13 13 Lines 692 692 Branches 141 141 ======================================= Hits 624 624 Misses 50 50 Partials 18 18 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.