docs(nxext): update nx-community link

[relliv]

https://nx.dev/nx-community is looks moved to https://nx.dev/community

And some minor updates.

[nx-cloud]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit a2f7d48. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this CI Pipeline Execution

---

✅ Successfully ran 4 targets

• nx affected --target=build --parallel=3
• nx affected --target=lint --parallel=3
• nx-cloud record -- pnpm exec nx format:check
• nx affected --target=test --parallel=3 --ci --code-coverage

---

Sent with 💌 from NxCloud.