Fixing the bug with twitter image and better description of Arito

[VanniPrashar]

I have written the description of Arito in read.me in a better language to give the users a more better user experience.
Being a frontend developer at IIT Roorkee, I tried to create a better UI by making the description more readable and interesting.

Also the image that opens to the twitter link is absent i.e. there is no image, so I fixed it with a twitter image.

I therefore request you to please accept and merge my pull request.

Type of change

What sort of change have you made:

• Bug fix (non-breaking change which fixes an issue)
• Code style update (formatting, local variables)

How Has This Been Tested?

< Describe_how_have_you_verified_the_changes_made >

Checklist:

• My code follows the guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly wherever it was hard to understand.
• I have made corresponding changes to the documentation.

Screenshots (Images)

Before the changes	After the Changes

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[github-actions]

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