feat: update README.md

[cin-jimmy]

Description

• Correct typos,
• Improve text formatting,
• Update latest screen UI,
• Resize HelloGitHub badge to small version,
• Add total download badge,
• Add contributors' graph,
• And other minor changes

Type of change

• [x] New features (non-breaking change).
• [ ] Bug fix (non-breaking change).
• [ ] Breaking change (fix or feature that would cause existing functionality not to work as expected).

Checklist

• [x] I have performed a self-review of my code.
• [x] I have added thorough tests if it is a core feature.
• [ ] There is a reference to the original bug report and related work.
• [ ] I have commented on my code, particularly in hard-to-understand areas.
• [ ] The feature is well documented.