[docs] Update exisiting README

[Aryamanz29]

• I found some of the section in project README have errors that need to be correct and I'm also thinking of improving overall project README.
• Some of the errors are shown below :

1. git pull upstream main (correction : we are using master as default branch)

2. Write commit message as "Small Message" 

git commit -m "Write a meaningfull but small commit message" 

(correction: better to mention proper commit message guidelines to maintain consistency, I would suggest to use : (https://www.conventionalcommits.org/en/v1.0.0/))

There are lots of area for improvement, let me know more in issue thread before proceeding further :)

[akhilsharmaa]

I like to work on this.

[adityasingh10042]

Hey, I want to work on this. Please assign this to me!

[Aryamanz29]

@adityasingh10042 Go ahead 👍🏻

[Aryamanz29]

@akhilsharmaa I have opened a general issue for all here : #198, Please read issue description carefully and send us PR :)