docs(ui_auth): Fixed typo in firebase_ui_oauth packages for firebase_ui_auth package. (#9931)

* Fixed documentation

* Update README.md

* Update README.md

* Update README.md

Author: MominRaza

packages/firebase_ui_oauth_apple/README.md

@@ -2,14 +2,14 @@
 
 [![pub package](https://img.shields.io/pub/v/firebase_ui_oauth_apple.svg)](https://pub.dev/packages/firebase_ui_oauth_apple)
 
-Apple Sign In for [Firebase UI](https://pub.dev/packages/firebase_ui_auth)
+Apple Sign In for [Firebase UI Auth](https://pub.dev/packages/firebase_ui_auth)
 
 ## Installation
 
 Add dependency
 
 ```sh
-flutter pub add firebase_ui
+flutter pub add firebase_ui_auth
 flutter pub add firebase_ui_oauth_apple
 
 flutter pub global activate flutterfire_cli

packages/firebase_ui_oauth_facebook/README.md

@@ -2,14 +2,14 @@
 
 [![pub package](https://img.shields.io/pub/v/firebase_ui_oauth_facebook.svg)](https://pub.dev/packages/firebase_ui_oauth_facebook)
 
-Facebook Sign In for [Firebase UI](https://pub.dev/packages/firebase_ui)
+Facebook Sign In for [Firebase UI Auth](https://pub.dev/packages/firebase_ui_auth)
 
 ## Installation
 
 Add dependencies
 
 ```sh
-flutter pub add firebase_ui
+flutter pub add firebase_ui_auth
 flutter pub add firebase_ui_oauth_facebook
 
 flutter pub global activate flutterfire_cli

packages/firebase_ui_oauth_google/README.md

@@ -2,14 +2,14 @@
 
 [![pub package](https://img.shields.io/pub/v/firebase_ui_oauth_google.svg)](https://pub.dev/packages/firebase_ui_oauth_google)
 
-Google Sign In for [Firebase UI](https://pub.dev/packages/firebase_ui)
+Google Sign In for [Firebase UI Auth](https://pub.dev/packages/firebase_ui_auth)
 
 ## Installation
 
 Add dependencies
 
 ```sh
-flutter pub add firebase_ui
+flutter pub add firebase_ui_auth
 flutter pub add firebase_ui_oauth_google
 
 flutter pub global activate flutterfire_cli

packages/firebase_ui_oauth_twitter/README.md

@@ -2,14 +2,14 @@
 
 [![pub package](https://img.shields.io/pub/v/firebase_ui_oauth_twitter.svg)](https://pub.dev/packages/firebase_ui_oauth_twitter)
 
-Twitter Sign In for [Firebase UI](https://pub.dev/packages/firebase_ui)
+Twitter Sign In for [Firebase UI Auth](https://pub.dev/packages/firebase_ui_auth)
 
 ## Installation
 
 Add dependencies
 
 ```sh
-flutter pub add firebase_ui
+flutter pub add firebase_ui_auth
 flutter pub add firebase_ui_oauth_twitter
 
 flutter pub global activate flutterfire_cli