Update auth-apple.mdx (supabase#36389)

* Update auth-apple.mdx

Add notes on to add all custom identifier for expo development build

* fix lint error

---------

Co-authored-by: Charis Lam <[email protected]>

Author: cjmling

apps/docs/content/guides/auth/social-login/auth-apple.mdx

@@ -192,6 +192,12 @@ When developing with Expo, you can test Sign in with Apple via the Expo Go app,
 
     </Admonition>
 
+    <Admonition type="note">
+
+    When testing with Expo development build with custom `bundleIdentifier`, for example com.example.app , com.example.app.dev , com.example.app.preview. Make sure to add all these variants to the "Client IDs" list in your [Supabase dashboard Apple provider configuration](https://supabase.com/dashboard/project/_/auth/providers)!
+
+    </Admonition>
+
     1. Have an **App ID** which uniquely identifies the app you are building. You can create a new App ID from the [Identifiers](https://developer.apple.com/account/resources/identifiers/list/bundleId) section in the Apple Developer Console (use the filter menu in the upper right side to see all App IDs). These usually are a reverse domain name string, for example `com.example.app`. Make sure you configure Sign in with Apple for the App ID you created or already have, in the Capabilities list. At this time Supabase Auth does not support Server-to-Server notification endpoints, so you should leave that setting blank. (In the past App IDs were referred to as _bundle IDs._)
     2. Register all of the App IDs that will be using your Supabase project in the [Apple provider configuration in the Supabase dashboard](https://supabase.com/dashboard/project/_/auth/providers) under _Client IDs_.