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docs: fix two dead external links (Create React App, Eta syntax) - #12338

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paul-madut:docs-fix-dead-links
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docs: fix two dead external links (Create React App, Eta syntax)#12338
paul-madut wants to merge 1 commit into
facebook:mainfrom
paul-madut:docs-fix-dead-links

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@paul-madut

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Motivation

Two links in the docs return 404. Both point at sites that reorganised after the docs were written.

Page Link Before After
styling-layout Create React App CSS Modules facebook.github.io/create-react-app/... -> 404 create-react-app.dev/docs/adding-a-css-modules-stylesheet/ -> 200
api/docusaurus.config.js Eta syntax eta.js.org/docs/syntax#syntax-overview -> 404 eta.js.org/docs/syntax/template-syntax -> 200

For Eta I used the unversioned path. eta.js.org/docs/syntax/template-syntax 302s to the current /docs/4.x.x/..., so it will not rot again on the next Eta major. The destination page is titled "Template Syntax", which is what the sentence refers to.

Test Plan

I extracted all 432 external URLs from website/docs and checked each one. Beyond these two, everything either returns 200, is an intentional placeholder (mysite.com, my-org.github.io), or 403s because the host blocks automated requests (npmjs, StackOverflow, Algolia) - those are fine in a browser, so I left them alone.

One I did not touch

migration/v3.mdx links an MDX v1 playground at mdx-git-renovate-babel-monorepo-mdx.vercel.app/playground/, which is also dead. That was an ephemeral Vercel preview for a Renovate branch that no longer exists, and I could not find a permanent MDX v1 playground to replace it with. Removing the bullet outright felt like a content decision for a maintainer rather than a link fix, so I left it and am flagging it here.

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meta-cla Bot commented Aug 7, 2026

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Hi @paul-madut!

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