Fix some docstrings

[codecov[bot]]

Codecov Report

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

Project coverage is 85.98%. Comparing base (03e705a) to head (e52c79d).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1814 +/- ## ========================================== + Coverage 85.96% 85.98% +0.01% ========================================== Files 98 98 Lines 36380 36380 ========================================== + Hits 31274 31280 +6 + Misses 5106 5100 -6 ```

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