Updating the README.md file of face_detection project.

[sakshid2706]

[GSSOC 23] The README.md of face_detection project has some grammatical errors and is also not very clear, it is needed to be updated.

[github-actions]

Hi thanks for creating your first issue at Amazing-Python-Scripts, hope you followed the guidelines.

[PrathmeshN99]

Hello @sakshid2706 , I'm a contributor in GSSoC, this is my first contribution to the programme, can you please assign this to me?

[sakshid2706]

Hello @PrathmeshN99 , Actually I am also a contributor in GSSoC, I have created this issue for my own contribution. I am waiting for it to be assigned to me.

[avinashkranjan]

Go Ahead @sakshid2706

[sakshid2706]

Thank You @avinashkranjan for assigning this issue to me.