sage

7e09a236 -

gh-37133: use Parent in free_algebra_quotient change to use `Parent` in the modified file a little step towards removal the old coercion framework also making a little refreshing for doc and pep8 ### :memo: Checklist - [x] The title is concise, informative, and self-explanatory. - [x] The description explains in detail what this PR is about. URL: https://github.com/sagemath/sage/pull/37133 Reported by: Frédéric Chapoton Reviewer(s): Travis Scrimshaw