fix: change showcase url (#34590)

## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`

## Documentation / Examples

- [ ] Make sure the linting passes by running `yarn lint`

docs/faq.md

@@ -7,7 +7,7 @@ description: Get to know more about Next.js with the frequently asked questions.
 <details>
   <summary>Is Next.js production ready?</summary>
   <p>Yes! Next.js is used by many of the top websites in the world. See the
-  <a href="/showcase">Showcase</a> for more info.</p>
+  <a href="https://nextjs.org/showcase">Showcase</a> for more info.</p>
 </details>
 
 <details>