chore(examples): update turborepo examples link (#40487)
chore(examples): update turborepo examples link (#40487)

## Documentation / Examples

We now maintain a landing page of all monorepo examples with Next.js apps. We can point users here instead. 

- [X] Make sure the linting passes by running `pnpm lint`
- [X] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)

JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js,JeromeFitz/next.js