Update refdocs and address review comments

Author: NhienLam

docs-devsite/auth.actioncodesettings.md

@@ -33,7 +33,7 @@ export interface ActionCodeSettings
 
 Sets the Android package name.
 
-This will try to open the link in an android app if it is installed. If `installApp` is passed, it specifies whether to install the Android app if the device supports it and the app is not already installed. If this field is provided without a `packageName`<!-- -->, an error is thrown explaining that the `packageName` must be provided in conjunction with this field. If `minimumVersion` is specified, and an older version of the app is installed, the user is taken to the Play Store to upgrade the app.
+This will try to open the link in an Android app if it is installed.
 
 <b>Signature:</b>
 
@@ -78,8 +78,6 @@ Sets the iOS bundle ID.
 
 This will try to open the link in an iOS app if it is installed.
 
-App installation is not supported for iOS.
-
 <b>Signature:</b>
 
 ```typescript

packages/auth/src/model/public_types.ts

@@ -462,12 +462,7 @@ export interface ActionCodeSettings {
    * Sets the Android package name.
    *
    * @remarks
-   * This will try to open the link in an android app if it is
-   * installed. If `installApp` is passed, it specifies whether to install the Android app if the
-   * device supports it and the app is not already installed. If this field is provided without
-   * a `packageName`, an error is thrown explaining that the `packageName` must be provided in
-   * conjunction with this field. If `minimumVersion` is specified, and an older version of the
-   * app is installed, the user is taken to the Play Store to upgrade the app.
+   * This will try to open the link in an Android app if it is installed.
    */
   android?: {
     installApp?: boolean;
@@ -490,8 +485,6 @@ export interface ActionCodeSettings {
    *
    * @remarks
    * This will try to open the link in an iOS app if it is installed.
-   *
-   * App installation is not supported for iOS.
    */
   iOS?: {
     bundleId: string;
@@ -522,7 +515,8 @@ export interface ActionCodeSettings {
    * The optional custom Firebase Hosting domain to use when the link is to be opened via
    * a specified mobile app. The domain must be configured in Firebase Hosting and owned
    * by the project. This cannot be a default Hosting domain (`web.app` or `firebaseapp.com`).
-   * @defaultValue The default Hosting domain will be used (for example, `example.firebaseapp.com`)
+   *
+   * @defaultValue The default Hosting domain will be used (for example, `example.firebaseapp.com`).
    */
   linkDomain?: string;
 }

packages/auth/test/integration/flows/hosting_link.test.ts

@@ -1,6 +1,6 @@
 /**
  * @license
- * Copyright 2023 Google LLC
+ * Copyright 2025 Google LLC
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.