Switch to check spelling

[jsoref]

Pull Request check-list

• [x] Do tests and lints pass with this change?
• [x] Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• [ ] Is the new or changed code fully tested?
• [ ] Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• [ ] Is there an example added to the examples folder (if applicable)?

Description of change

• This addresses https://github.com/valkey-io/libvalkey-py/pull/30#issuecomment-3422581240 by replacing the spell checker
• Fixes a bunch of spelling errors that check-spelling identified (some categories were disabled to make this a slightly minimal set as opposed to a much larger one)

Normally, I wouldn't bundle spelling fixes and the workflow, but my previous change unfortunately broke the other spell checker, so...