Update readme file for adding how to contribute in this repo

[niteshkr100]

Hey @shivamyadavrgipt ,

Title

Update readme file for adding how to contribute in this repo.

Description

There is no proper steps written on how to contribute in this repo and I want to add this section of page for better contribution in this repo.

@shivamyadavrgipt, Please assign me this task under Gssoc-ext & hacktoberfest-accepted label.

[github-actions]

👋 Hey @niteshkr100! Thanks for opening this issue and helping us improve.
We appreciate your input, and our team will review this soon.
Stay tuned for updates, and feel free to share any further details you think might help!