Fixes a couple of typos in various places

[codecov-commenter]

Codecov Report

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

Project coverage is 68.47%. Comparing base (84d50f3) to head (8ecf46a). Report is 7 commits behind head on master.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #306 +/- ## ========================================== + Coverage 68.06% 68.47% +0.41% ========================================== Files 81 83 +2 Lines 12214 12375 +161 ========================================== + Hits 8313 8474 +161 Misses 3901 3901 ```

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