Update and rename README to README.md

[Bindusree1515]

PR Description 📜

This pull request resolves the issue related to the README file format in the Aero_Acrobat repository. The README file has been updated to include the correct file extension (README.md) and has been formatted using Markdown syntax for improved readability and understanding.
Fixes #3317

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• I follow CONTRIBUTING GUIDELINE & CODE OF CONDUCT of this project.
• I have performed a self-review of my own code or work.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generates no new warnings.
• I have followed proper naming convention showed in CONTRIBUTING GUIDELINE
• I have added screenshot for website preview in assets/images
• I have added entries for my game in main README.md
• I have added README.md in my folder
• I have added working video of the game in README.md (optional)
• I have specified the respective issue number for which I have requested the new game.

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Thank you soo much for contributing to our repository 💗

[kunjgit]

Thank you @Bindusree1515 ,for creating the PR and contributing to our GameZone 💗
Review team will review the PR and will reach out to you soon! 😇
Make sure that you have marked all the tasks that you are done with ✅.
Thank you for your patience! 😀

[kunjgit]

Thank you @Bindusree1515 , for your valuable time and contribution in our GameZone 💗.
It’s our GameZone, so Let’s build this GameZone altogether !!🤝
Hoping to see you soon with another PR again 😇
Wishing you all the best for your journey into Open Source🚀