Docx : Add Table of Contents in README

[imBharathkumarp]

• Add Table of Contents with Toggle Button.
• To improve navigation
• Easy and quick access to contents in README.
• @soumya813 , Please assign me.

[Chavva-Harshita]

Hi @soumya813, I would like to work on this issue.
I can add a Table of Contents with a toggle button to improve navigation and ensure quick access to sections in the README.
Please assign this to me.

Thanks!