Cleaned READMEs for better readability & renamed all READMEs to uppercase.

[bernasiakk]

PR Title

update readmes

Summary

Cleaned READMEs for better readability & renamed all READMEs to uppercase.

Changes

1. fixed minor typos and punctuation errors.
2. Removed some unnecessary spaces within READMEs.
3. renamed readme's to uppercase for standardization.

Checks

in the repository

• Made no changes that degrades the functioning of the repository
• Gave each commit a better title (unlike updated README.md)

in the PR

• Followed the format of the pull_request_template
• Made the Pull Request in a small level (for the creator's wellfare)
• Tested the changes you made

Thank You,

Szymon

[hasan-py]

Thank you for the contribution