Fix typos and improve grammar in README

[cypriansakwa]

Corrected minor grammatical errors and typos.
Improved sentence clarity for better readability.
Ensured consistency in formatting and phrasing.

[cypriansakwa]

Subject: Request for Review – Grammar & Typo Fixes in README
Dear Zama Team @zaccherinij , @aquint-zama , @randhindi , @yuxizama , @soonum , @jeremycbradley , @bencrts , @umut-sahin , @carrotcypher ,

I hope you are doing well. I recently came across your Zama Bounty Program repository and noticed a few minor typos and grammatical inconsistencies in the README. To enhance clarity and readability, I have submitted a pull request with corrections.

My changes include:

1. Fixing minor typos for grammatical accuracy.

2. Improving sentence structure for better readability.

3. Ensuring consistency in formatting.

I would greatly appreciate it if you could take a moment to review my PR. Please let me know if any further modifications are needed.
Looking forward to your feedback!

Best regards,
Cyprian Sakwa