Fix contributor guide setup details

[alan747271363-art]

Summary

Updates the contributor guide with a few small correctness fixes:

• Fixes typos in the intro and running section heading.
• Updates the documented pnpm requirement to match the repository packageManager value (pnpm@10.5.2).
• Uses the standard macOS and Next.js names.

Validation

• git diff --check
• corepack.cmd pnpm --version returned 10.5.2

Greptile Summary

This PR makes five small editorial corrections to CONTRIBUTING.md, all of which are accurate and consistent with the repository's actual configuration.

• Fixes two typos: "bare with us" → "bear with us" and "Runing Cap" → "Running Cap".
• Updates the documented pnpm requirement from 8.10.5+ to 10.5.2+, which exactly matches the \"packageManager\": \"pnpm@10.5.2\" field in the root package.json.
• Corrects the casing of "MacOS" → "macOS" and "NextJS" → "Next.js" to match their official brand names.

Confidence Score: 5/5

Documentation-only change with no runtime impact; all factual claims were verified against the repository.

Every changed value was checked: the pnpm version matches the root packageManager field, and the remaining edits are straightforward spelling and branding corrections with no ambiguity.

No files require special attention.

Important Files Changed

Filename	Overview
CONTRIBUTING.md	Five small correctness fixes: two typos ("bare"→"bear", "Runing"→"Running"), pnpm version updated from 8.10.5+ to 10.5.2+ (matches root packageManager field), "MacOS"→"macOS", and "NextJS"→"Next.js"

_{Reviews (1): Last reviewed commit: "Fix contributor guide setup details" | Re-trigger Greptile}