Minor: README.md typos fixed

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (51d9f42) 97.70% compared to head (c077cc0) 97.70%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #122 +/- ## ======================================= Coverage 97.70% 97.70% ======================================= Files 67 67 Lines 2398 2398 ======================================= Hits 2343 2343 Misses 55 55 ```

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[tcbrindle]

Thanks @StefanVK!