chore: minor docs polish

Author: vonovak

docs/setting-up/get-config-file.mdx

@@ -114,3 +114,13 @@ Read below on how to set up Google Sign In for your iOS app.
 [//]: # '(offline support, web support)'
 
 For some use cases, a Web Client ID is needed (provided to the `configure()` call). To obtain a Web Client ID, go to [Google Cloud Console](https://console.cloud.google.com/apis/credentials?project=_) and find an existing one (it may have been already created by Firebase) or create a new OAuth Client ID of type **Web**.
+
+---
+
+## Summary
+
+At the end of this guide, regardless of whether you use Firebase, when you visit [Google Cloud Console](https://console.cloud.google.com/apis/credentials?project=_), you should have in the "OAuth 2.0 Client IDs" section:
+
+- Android OAuth Client ID(s) with SHA-1 fingerprints
+- iOS OAuth Client ID(s) with iOS URL scheme
+- Web Client ID