docs: add CNCF article to external articles list

[savisaluwadana]

Purpose

This Pr adds the new External Article written about OpenChoreo which was published on CNCF

Related Issues

Checklist

• Updated sidebars.ts if adding a new documentation page
• Run npm run start to preview the changes locally
• Run npm run build to ensure the build passes without errors
• Verified all links are working (no broken links)

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a new external article with associated metadata and image preview to the exported articles dataset.

Changes

External article dataset

Layer / File(s)	Summary
Add external article entry src/data/externalArticles.ts	Imports cncfAgenticEnterprisePreview and appends a new ExternalArticle entry with its title, URL, description, date, category, source, and image.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• openchoreo/openchoreo.github.io#703: Updates the same external article dataset with image imports and additional entries.
• openchoreo/openchoreo.github.io#729: Adds an article preview image and entry in the same data path.
• openchoreo/openchoreo.github.io#744: Extends the same exported dataset with article entries and preview images.

Suggested reviewers: lakshanss

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly summarizes adding a CNCF article to the external articles list.
Description check	✅ Passed	The description follows the required template and includes Purpose, Related Issues, and Checklist sections.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[LakshanSS]

LGTM

[LakshanSS]

Shall we update the PR title to follow conventional commits?
docs: add CNCF article to external articles list

[savisaluwadana]

Sure will do @LakshanSS

[LakshanSS]

LGTM