feat: sync docs with webpack.js.org

[bjohansebas]

Summary

This only syncs with the latest changes from the repository. I'm going to start updating the guides like this. 🙂

Note that those author changes are just because we forgot to update them when we modified those pages

What kind of change does this PR introduce?

Did you add tests for your changes?

Does this PR introduce a breaking change?

If relevant, what needs to be documented once your changes are merged or what have you already documented?

Use of AI

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
webpack-doc-kit	Ready	Preview, Comment	Jul 21, 2026 10:06pm

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[github-actions]

⚡ Lighthouse report

Audited the Vercel preview deployment: https://webpack-doc-pj5v5dzu5-openjs.vercel.app

URL	Performance	Accessibility	Best Practices	SEO	Report
/	🟢 96	🟠 88	🟢 100	🟢 100	🔗
/about	🟢 99	🟠 89	🟢 100	🟢 100	🔗
/about/sponsors	🟢 98	🟠 83	🟢 100	🟢 100	🔗
/blog	🟢 99	🟠 86	🟢 100	🟢 100	🔗
/blog/posts/2026-02-04-roadmap-2026	🟢 98	🟠 87	🟢 100	🟢 100	🔗
/guides/getting-started	🟢 95	🟠 89	🟢 100	🟢 100	🔗
/docs/api/v5.x/options	🔴 68	🟠 88	🟢 100	🟢 100	🔗
/docs/loaders/css-loader	🟢 98	🟠 89	🟢 100	🟠 83	🔗

Scores are advisory (warn at 90); they do not fail the build. See .lighthouserc.json.