Changes vercel/examples links from linking to GitHub repo to templa…

…te marketplace (#43780)

### Description

* Gives us [Vercel] more SEO juice rather than GitHub.
* Gives us the freedom to control GitHub repo file structure independent from URLs.

## Feature

- [x] Documentation added

errors/node-module-in-edge-runtime.md

@@ -16,4 +16,4 @@ For example, you might replace the Node.js `crypto` module with the [Web Crypto
 
 - [Edge Runtime Supported APIs](https://nextjs.org/docs/api-reference/edge-runtime)
 - [Next.js Middleware](https://nextjs.org/docs/advanced-features/middleware)
-- [JWT Example](https://github.com/vercel/examples/tree/main/edge-functions/jwt-authentication)
+- [JWT Example](https://vercel.com/templates/next.js/jwt-authentication)