Fix link in new typescript docs (#6232)

While reading the new typescript docs introduced in #6120, I noticed this link points to a fork. This commit changes it to a relative link so it should work everywhere.

Author: maxjacobson

src/content/learn/typescript.md

@@ -20,7 +20,7 @@ TypeScript is a popular way to add type definitions to JavaScript codebases. Out
 
 ## Installation {/*installation*/}
 
-All [production-grade React frameworks](https://react-dev-git-fork-orta-typescriptpage-fbopensource.vercel.app/learn/start-a-new-react-project#production-grade-react-frameworks) offer support for using TypeScript. Follow the framework specific guide for installation:
+All [production-grade React frameworks](/learn/start-a-new-react-project#production-grade-react-frameworks) offer support for using TypeScript. Follow the framework specific guide for installation:
 
 - [Next.js](https://nextjs.org/docs/pages/building-your-application/configuring/typescript)
 - [Remix](https://remix.run/docs/en/1.19.2/guides/typescript)