docs: fix typos across contributing, product, and skill docs (#3153)

Fix spelling and grammar errors found in a full sweep of the
repo's English markdown files.

- CONTRIBUTING.md: "contributing to to it", "accpeted", "wil"
- .github/PULL_REQUEST_TEMPLATE.md: "value provider to" instead
  of "value provided to"
- docs/product.md: "vendor-lock in" instead of "vendor lock-in"
- packages/expo-two-way-audio/CONTRIBUTING.md: "prescreptive"
- packages/expo-two-way-audio/README.md: "can bee added"
- skills/paseo-committee/SKILL.md: "considered and reject"

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

docs/product.md

@@ -12,7 +12,7 @@ The development workflow is shifting from manually editing files to orchestratin
 
 Freedom and flexibility. Every design decision follows from this:
 
-- **Multi-provider** — Use any coding agent harness. Pick the right model for each job, switch freely as the landscape shifts. No vendor-lock in.
+- **Multi-provider** — Use any coding agent harness. Pick the right model for each job, switch freely as the landscape shifts. No vendor lock-in.
 - **Cross-device** — Desktop, mobile, web, CLI. Start work at your desk, check progress from your phone, script from the terminal.
 - **Self-hosted** — The daemon runs on your machine. Your code, your keys, your environment. No inference markup, no cloud dependency.
 - **Respectful** - No telemetry, no forced cloud, no forced accounts