ENG-1494 Add examples to the code review overview

Plan

Observations

• The code review overview page (docs/guides/review-instructions.md) thoroughly documents custom review instructions but omits real-world examples demonstrating CodeRabbit in action.
• Other parts of the docs use raw GitHub PR URLs and a saved search link format for live examples.
• Plugin analysis confirmed that manually inserting markdown is the simplest, most maintainable approach, requiring no new dependencies.

Approach

1. Open docs/guides/review-instructions.md and locate the end of the “AST-based instructions” section (around line 111).
2. Insert a new ## Real-World Examples section using the same styling conventions (## for headings, - for bullets, Markdown links, em dashes for descriptions).
3. Include three curated PR links showcasing different CodeRabbit capabilities, plus a saved search URL for broader discovery.
4. Run the docs build locally to verify formatting and link accuracy.
5. Commit, push, and open a PR for review.

Reasoning

• Audited documentation files to pinpoint the correct overview page and insertion point.
• Reviewed styling conventions in existing markdown sections.
• Gathered representative PR examples and a GitHub search URL from other docs and repo patterns.
• Evaluated plugin options and decided on manual markdown addition for simplicity.

Proposed File Changes

Import In IDE

Developer Humor

Code review now gets a cheer,
With live PRs to make it clear.
Links to show what Rabbit sees,
Because examples are the keys!
Docs go live—maintenance with ease! 🚀