gh-37335: some details in modules (ruff and pep)
just fixing a few ruff warnings and code formatting details in the
`modules` folder
### :memo: Checklist
- [x] The title is concise, informative, and self-explanatory.
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URL: https://github.com/sagemath/sage/pull/37335
Reported by: Frédéric Chapoton
Reviewer(s): Matthias Köppe
