[SwetaKumari7]

Summary

This PR fixes the prose and typo issues listed in #633 across:

• lectures/functions.md
• lectures/oop_intro.md
• lectures/python_oop.md

The changes correct wording, spelling, punctuation, and Markdown formatting without changing the lecture content or code behavior.

Closes #633

[SwetaKumari7]

Thanks! The changes for #633 are ready for review. The PR has no conflicts, and the available checks have completed successfully.

[SwetaKumari7]

Hi maintainers, just following up on this PR. The typo and prose corrections are ready for review. Please let me know if any changes are needed. Thank you!

[mmcky]

Thank you @SwetaKumari7, and I'm sorry this waited so long for a review.

#637 fixes the same list from #633 and also includes the two lines this PR leaves out: "for some $t$" in functions.md (the one #633 marks as mattering most, because all four translations copy it) and __init__ in python_oop.md. So I've merged #637 and am closing this one.

This PR also removed the blank line after the factorial() sentence in functions.md, which is why it now conflicts with #638, merged today. Thanks again for the careful work.

[SwetaKumari7]

Thank you for reviewing my PR and explaining the overlap. No worries about the delay! I'll keep contributing and look for other improvements in the project. I appreciate your feedback!