Fix spell checker errors

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 98.95833% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 93.23%. Comparing base (cc5d640) to head (20216d8).

Files	Patch %	Lines
atpbar/machine.py	50.00%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #48 +/- ## ======================================= Coverage 93.23% 93.23% ======================================= Files 49 49 Lines 2069 2069 Branches 293 293 ======================================= Hits 1929 1929 Misses 117 117 Partials 23 23 ```

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