[Docs] Style and grammar pass on ray-contribute developer guides

[dstrodtman]

Summary

A style and grammar editing pass across all pages in doc/source/ray-contribute/ (the developer and contributor guides). This is a copyedit only — no content, instructions, or behavior change.

What changed

• Headings: sentence case, preserving proper nouns and acronyms (Ray, API, CI, GDB, Docker).
• Word choice: removed filler (simply/just/actually/currently/easily); "such as" instead of "like" for examples; spelled out "for example"/"that is" for Latin abbreviations.
• Voice and tense: active voice and present tense where the actor is clear; kept the project's first-person "we" voice.
• Punctuation: removed em-dashes, semicolons, and parenthetical asides in prose; restructured into shorter sentences; straightened curly quotes.
• Links and images: descriptive link text (no bare URLs or "click here"); added alt text to images.
• Fixes: typos and errors including non-determnistic → non-deterministic, .rST → .rst, "an usage" → "a usage", "twice cheaper" → "at half the cost", Mac OS/MacOS/Macbook → macOS/MacBook.

Safety

• MyST directives, {ref}/{doc} roles, (label)= anchors, front matter, and all code and output blocks are untouched. Verified: role and label counts are identical to master, and no internal anchor links reference reworded headings.
• Vale (Google style, the linter CI uses) alerts drop from 344 errors / 176 suggestions to 270 / 123. The remaining errors are pre-existing Vale.Spelling false positives on domain terms such as Bazel, pytest, and raylet.

15 files changed.

🤖 Generated with Claude Code

[gemini-code-assist]

Code Review

This pull request makes extensive copyediting, formatting, and stylistic improvements across Ray's contributor and developer documentation to enhance readability and consistency. The changes include standardizing title capitalization to sentence case, correcting typos, improving grammar, and updating terminology. The review feedback suggests replacing several absolute URLs pointing to the master branch with local MyST cross-references ({doc} and {ref}) and relative links to ensure they resolve correctly in local previews and across different branches.

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