Update README for clarity and consistency

[sapayth]

fixes #37

Improved capitalization and wording in the README.md roadmap and credits sections for better readability and consistency.

Motivation and Context

These are just small wording tweaks, but they’ll make the README easier to read and more consistent.

How Has This Been Tested?

This PR contains only grammatical corrections in documentation/text. No application logic was affected, so testing was not applicable.

Breaking Changes

No

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context