Add New Topics about Git/GitHub / Links or references

[NishkarshRaj]

The introduction to Git and GitHub is very basic and can be easily enhanced by adding more reference material and links as provided in the bottom of https://github.com/NishkarshRaj/Introduction-to-Git-and-GitHub/blob/master/docs/intro.md

[GuillaumeFalourd]

Hi @NishkarshRaj , I would like to contribute adding a section about github api (https://docs.github.com/en/free-pro-team@latest/rest). Could assign me this issue ?

[NishkarshRaj]

@GuillaumeFalourd create a PR and mention it here 👍 💯

[GuillaumeFalourd]

Here @NishkarshRaj : #2
Thank you 👍

[NishkarshRaj]

@GuillaumeFalourd Thanks for the enhancement to this guide 😄