Update custom-pages.mdx

Author: fomalhautb

docs/fern/docs/pages/customization/custom-pages.mdx

@@ -37,7 +37,7 @@ export const stackServerApp = new StackServerApp({
 
 You are now all set! If you visit the `/signin` page, you should see your custom sign in page. If your user visits a protected page or the old `/handler/sign-in` URL, they will be redirected to your new sign-in page.
 
-For more examples, please refer to the [Examples](/category/page-examples).
+For more examples, please refer to the [Examples](/customization/page-examples/signin).
 
 
 ## From scratch