OAuth documentation shows incorrect configuration

[enzeart]

What is the improvement or update you wish to see?

The configuration for auth.ts shown here causes an error:

TS2322: Type
<P extends KeycloakProfile>(options: OAuthUserConfig<P>) => OAuthConfig<P>
is not assignable to type Provider
auth.ts(5, 15): Did you mean to call this expression?

This appears to be a known issue with the documentation that was never addressed. Can you please turn this into a fully-functioning example?

Is there any context that might help us understand?

N/A

Does the docs page already exist? Please link to it.

https://authjs.dev/getting-started/authentication/oauth