docs: fix typos, formatting issues, and markdown spacing in README

[Born-as-Harsha]

This PR fixes several small documentation issues in README.md:

✔ Fixed formatting issues

• Removed extra space before closing bracket in Rust text editor link
• Corrected misplaced newline for a [video] tag
• Added missing blank line after the “Build your own Augmented Reality” header

✔ Fixed typos

• Changed “TCP chater server” → “TCP chat server”
• Changed “Writing a INI Parser” → “Writing an INI Parser”

✔ Summary

These changes improve readability, markdown correctness, and consistency across the document. No content or structure was changed.

This is a pure documentation cleanup PR.

[Born-as-Harsha]

Hi!
I’ve opened this documentation cleanup PR to fix a few small formatting and typo issues in README.md.
All changes are minimal, safe, and isolated to documentation only.
If everything looks good, I kindly request a review and merge at your convenience.
Thank you for maintaining this amazing repository!

[Born-as-Harsha]

Hi!
Just a friendly follow-up after a week.
No rush — just wanted to check if this PR needs any changes from my side.
Thanks again for maintaining this amazing project!