docs: Fix grammar, consistency, and formatting issues in CONTRIBUTING.md (#11105)
This PR improves the overall readability and consistency of the
CONTRIBUTING.md file.
Changes include:
Fixed minor grammatical and punctuation issues
Standardized capitalization and phrasing across sections
Added missing backticks for inline code consistency
Improved sentence flow for clarity and professionalism
These updates do not modify any technical instructions or content — they
only enhance clarity and maintain a consistent documentation style.
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Co-authored-by: Anthony Shew <anthonyshew@gmail.com>