chore: add Tenki as a community provider

[francoluxor]

What this changes

Adding Tenki as a community provider in the public docs.

How it was tested

pnpm prettier --check apps/web/content/docs/tenki.mdx apps/web/content/docs/meta.json
pnpm --filter @agentbox/web build
pnpm --filter @agentbox/web dev
# Open http://localhost:3000/docs/tenki

Checklist

• pnpm lint && pnpm build && pnpm typecheck && pnpm test passes
• Public docs updated if a command, flag, config key, or default changed (apps/web/content/docs/)
• I have read and agree to the Contributor License Agreement

[vercel]

@francoluxor is attempting to deploy a commit to the madarco's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

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I have read the CLA Document and I hereby sign the CLA

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[francoluxor]

I have read the CLA Document and I hereby sign the CLA.

[madarco]

Thanks for the contribution, this is merged and published