chore(docs): update vercel postgres doc link (#11703)

Co-authored-by: Nico Domino <[email protected]>

docs/pages/getting-started/adapters/pg.mdx

@@ -51,7 +51,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 })
 ```
 
-If you are using [Neon](https://neon.tech)'s PostgreSQL like [Vercel Postgres](https://vercel.com/docs/postgres), you can use `@neondatabase/serverless` to work with edge runtime.
+If you are using [Neon](https://neon.tech)'s PostgreSQL like [Vercel Postgres](https://vercel.com/docs/storage/vercel-postgres), you can use `@neondatabase/serverless` to work with edge runtime.
 
 ```ts filename="./auth.ts"
 import NextAuth from "next-auth"