Dark Mode Bug fix on Open source page

[supriya46788]

currently on open source page, the dark mode looks inconsistent which needs to be fixed...check the glossary page for reference.

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. Kindly Star the repo ⭐ We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊

[Nikhilrsingh]

@supriya46788 please assign it to me maam