add OIDC

Author: ethanpalm

authentication-personalization/authentication-setup.mdx

@@ -90,7 +90,7 @@ Your documentation is hosted at `docs.foo.com` and your team uses the dashboard
 <Tab title="OAuth 2.0">
 ### Prerequisites
 
-* An OAuth server that supports the Authorization Code Flow.
+* An OAuth or OIDC server that supports the Authorization Code Flow.
 * Ability to create an API endpoint accessible by OAuth access tokens (optional, to enable personalization features).
 
 ### Implementation