chore(ci): update org name from onkernel to kernel

[masnwilliams]

Summary

• Updates GitHub org name references in workflow files from onkernel to kernel
• Fixes the release-doctor.yml condition that was always evaluating to false after the org rename

Files Changed

• .github/workflows/release-doctor.yml - Update repo check condition
• .github/workflows/publish-npm.yml - Update comment URL

🤖 Generated with Claude Code

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Note

Updates GitHub Actions workflows to reflect org rename and fix release condition.

• Corrects github.repository check in release-doctor.yml from onkernel/kernel-node-sdk to kernel/kernel-node-sdk so the job can run
• Updates comment URL in publish-npm.yml to the new org path

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