fix docs

[Rich-Harris]

bewildered as to why this suddenly started to cause deploy failures, or rather why it ever succeeded

[changeset-bot]

⚠️ No Changeset found

Latest commit: ae1d804

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[github-actions]

Playground

pnpm add https://pkg.pr.new/svelte@16953

[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-svelte-16953-svelte.vercel.app/