We would like to maintain a single `next-auth` example under our organization. This PR points readers of the Next.js docs to our repository, instead of `with-next-auth`
Also, as @kriscarle pointed out in https://github.com/nextauthjs/next-auth/issues/1132#issuecomment-772375650, we should maybe only maintain a single example to be able to keep it up-to-date more easily.
**What's the problem this PR addresses?**
A decent amount of the examples don't have a `name` field in `package.json` that matches their folder name, meaning they either lack a name or the names are duplicated.
I was testing Yarn 2 workspaces using the entire examples directory and needed to get rid of the duplicates.
**How did you fix it?**
Updated the names to match the names of their folders
I accidentally deleted the repo the original PR was based upon haha.
Anyway, the code was still on my computer so here's a new PR with the same content.
I addressed the latest comments from @lfades in the old PR (https://github.com/vercel/next.js/pull/14180)
I also updated `next-auth` to `2.1.0` and updated the `<Provider />` component in `_app.js` that needed updating since the latest release.
Let me know if I missed anything else, otherwise I think this should be good to go 👍
