fix: redirect legacy docs home URLs to docs root

[EduardF1]

Summary

Fixes #3247

The legacy docs-home URLs loop. On the live site:

$ curl -s https://www.typescriptlang.org/docs/home
<script>window.location.href="/docs/home"</script>
$ curl -s https://www.typescriptlang.org/docs/home.html
<script>window.location.href="/docs/home"</script>

/docs/home.html and /docs/home both end up on a client-side stub that redirects to /docs/home again. The chain in veryOldRedirects (/docs/home.html to /docs/home to /docs) collapses into a single file on the static host, and the stub that wins is the self-referencing one.

Changes

• /docs/home.html now redirects straight to /docs/
• /docs/home now redirects straight to /docs/

One hop each, no intermediate route. /docs/ (with the trailing slash) is the target because the host answers /docs with a 301 to /docs/, and it matches the other docs-root targets in handbookRedirects (/docs/tutorial.html, /docs/bootstrap, /docs/handbook/release-notes).

Testing

• pnpm exec prettier --check packages/typescriptlang-org/src/redirects/setupRedirects.ts
• git diff --check
• Verified the current loop on the live site with the curl calls above; the redirect table now sends both legacy URLs to /docs/.

[EduardF1]

Friendly ping — CI checks passed. Let me know if there's anything you need changed here!

[EduardF1]

Friendly follow-up with the validation details to make review quick:

• This collapses a chained redirect. Today /docs/home.html → /docs/home → /docs is two hops; the PR makes both legacy URLs redirect in a single hop to the docs root.
• The target /docs/ matches the dominant convention for docs-root redirect targets already in setupRedirects.ts — e.g. /docs/tutorial.html, /docs/bootstrap, /docs/handbook/release-notes, and /docs/handbook/release-notes/overview all redirect to /docs/.

CLA check is green and the PR is mergeable with no conflicts against v2. Let me know if you'd prefer the trailing-slash-less /docs form for consistency with the older veryOldRedirects entries instead — easy one-line change either way.

[EduardF1]

Friendly ping — this is mergeable with the CLA green; it just needs a maintainer review. Happy to adjust (e.g. the trailing-slash /docs/ vs /docs choice) if you'd prefer.