Spelling

[jsoref]

Pull Request Checklist

Thank you for taking the time to improve Arrow! Before submitting your pull request, please check all appropriate boxes:

• [ ] 🧪 Added tests for changed code.
• [ ] 🛠️ All tests pass when run locally (run tox or make test to find out!).
• [ ] 🧹 All linting checks pass when run locally (run tox -e lint or make lint to find out!).
• [ ] 📚 Updated documentation for changed code.
• [x] ⏩ Code is up-to-date with the master branch.

If you have any questions about your code changes or any of the points above, please submit your questions along with the pull request and we will try our best to help!

Description of Changes

This PR corrects misspellings identified by the check-spelling action.

The misspellings have been reported at https://github.com/jsoref/arrow/commit/3e651ea417970e09d15ed8737c316811ea26f1b7#commitcomment-86504456

The action reports that the changes in this PR would make it happy: https://github.com/jsoref/arrow/commit/bb8eb4f434225f9111df1a2a4e94d8340f95412b

Note: this PR does not include the action. If you're interested in running a spell check on every PR and push, that can be offered separately.

[codecov[bot]]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage :thumbsup:

Coverage data is based on head (eab2621) compared to base (1bba2a8). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1131 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 9 9 Lines 2318 2318 Branches 492 492 ========================================= Hits 2318 2318 ``` | [Impacted Files](https://codecov.io/gh/arrow-py/arrow/pull/1131?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py) | Coverage Δ | | |---|---|---| | [arrow/arrow.py](https://codecov.io/gh/arrow-py/arrow/pull/1131/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py#diff-YXJyb3cvYXJyb3cucHk=) | `100.00% <ø> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=arrow-py)

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