chore: Upadte Saas Service Management README to reference App Lifecycle Manager (#12942)

See b/505337310

---------

Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>

Author: lqiu96

generation_config.yaml

@@ -2209,7 +2209,7 @@ libraries:
   GAPICs:
   - proto_path: google/cloud/run/v2
 - api_shortname: saasservicemgmt
-  name_pretty: SaaS Runtime API
+  name_pretty: App Lifecycle Manager
   product_documentation: https://cloud.google.com/saas-runtime/docs/overview
   api_description: "Model, deploy, and operate your SaaS at scale.\t"
   client_documentation: 

java-saasservicemgmt/.repo-metadata.json

@@ -1,6 +1,6 @@
 {
   "api_shortname": "saasservicemgmt",
-  "name_pretty": "SaaS Runtime API",
+  "name_pretty": "App Lifecycle Manager",
   "product_documentation": "https://cloud.google.com/saas-runtime/docs/overview",
   "api_description": "Model, deploy, and operate your SaaS at scale.\t",
   "client_documentation": "https://cloud.google.com/java/docs/reference/google-cloud-saasservicemgmt/latest/overview",

java-saasservicemgmt/README.md

@@ -1,6 +1,6 @@
-# Google SaaS Runtime API Client for Java
+# Google App Lifecycle Manager Client for Java
 
-Java idiomatic client for [SaaS Runtime API][product-docs].
+Java idiomatic client for [App Lifecycle Manager][product-docs].
 
 [![Maven][maven-version-image]][maven-version-link]
 ![Stability][stability-image]
@@ -67,14 +67,14 @@ See the [Authentication][authentication] section in the base directory's README.
 
 ## Authorization
 
-The client application making API calls must be granted [authorization scopes][auth-scopes] required for the desired SaaS Runtime API APIs, and the authenticated principal must have the [IAM role(s)][predefined-iam-roles] required to access GCP resources using the SaaS Runtime API API calls.
+The client application making API calls must be granted [authorization scopes][auth-scopes] required for the desired App Lifecycle Manager APIs, and the authenticated principal must have the [IAM role(s)][predefined-iam-roles] required to access GCP resources using the App Lifecycle Manager API calls.
 
 ## Getting Started
 
 ### Prerequisites
 
-You will need a [Google Cloud Platform Console][developer-console] project with the SaaS Runtime API [API enabled][enable-api].
-You will need to [enable billing][enable-billing] to use Google SaaS Runtime API.
+You will need a [Google Cloud Platform Console][developer-console] project with the App Lifecycle Manager [API enabled][enable-api].
+You will need to [enable billing][enable-billing] to use Google App Lifecycle Manager.
 [Follow these instructions][create-project] to get your project set up. You will also need to set up the local development environment by
 [installing the Google Cloud Command Line Interface][cloud-cli] and running the following commands in command line:
 `gcloud auth login` and `gcloud config set project [YOUR PROJECT ID]`.
@@ -84,13 +84,13 @@ You will need to [enable billing][enable-billing] to use Google SaaS Runtime API
 You'll need to obtain the `google-cloud-saasservicemgmt` library.  See the [Quickstart](#quickstart) section
 to add `google-cloud-saasservicemgmt` as a dependency in your code.
 
-## About SaaS Runtime API
+## About App Lifecycle Manager
 
 
-[SaaS Runtime API][product-docs] Model, deploy, and operate your SaaS at scale.	
+[App Lifecycle Manager][product-docs] Model, deploy, and operate your SaaS at scale.	
 
-See the [SaaS Runtime API client library docs][javadocs] to learn how to
-use this SaaS Runtime API Client Library.
+See the [App Lifecycle Manager client library docs][javadocs] to learn how to
+use this App Lifecycle Manager Client Library.
 
 
 
@@ -103,7 +103,7 @@ To get help, follow the instructions in the [shared Troubleshooting document][tr
 
 ## Transport
 
-SaaS Runtime API uses both gRPC and HTTP/JSON for the transport layer.
+App Lifecycle Manager uses both gRPC and HTTP/JSON for the transport layer.
 
 ## Supported Java Versions