fix: update clone URLs to pilot-protocol org

[TeoSlayer]

Summary

• Updated git clone URLs in CONTRIBUTING.md and docs/BUILD_INSTRUCTIONS.md from TeoSlayer/pilotprotocol to pilot-protocol/pilotprotocol to reflect the correct GitHub org after the repo rename.

Test plan

• Verify clone URLs in both files point to github.com/pilot-protocol/pilotprotocol

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[TeoSlayer]

Failing on README quickstart smoke. Since this PR updates clone URLs to the pilot-protocol org, the smoke test is likely cloning/installing from a path that 404s or hasn't propagated yet (or the package isn't published under the new name). Recommendation: confirm the new org URLs resolve and the quickstart's referenced package/tag exists before merging.