chore(java-iam-policy): update name pretty (#13393)

Bring in change made in
#13378 for
iam-policy name to config and generate.
run these commands locally:
```
V=$(go run github.com/googleapis/librarian/cmd/librarian@latest config get version)
go run github.com/googleapis/librarian/cmd/librarian@${V} generate iam-policy
```

Fixes googleapis/librarian#6336

Author: zhumin8

generation_config.yaml

@@ -1442,7 +1442,7 @@ libraries:
   GAPICs:
   - proto_path: google/iam/admin/v1
 - api_shortname: iam-policy
-  name_pretty: IAM
+  name_pretty: Cloud IAM Policy
   product_documentation: n/a
   api_description: n/a
   release_level: stable

java-iam-policy/.repo-metadata.json

@@ -1,6 +1,6 @@
 {
   "api_shortname": "iam-policy",
-  "name_pretty": "Google Cloud IAM Policy",
+  "name_pretty": "Cloud IAM Policy",
   "product_documentation": "n/a",
   "api_description": "n/a",
   "client_documentation": "https://cloud.google.com/java/docs/reference/proto-google-iam-v1/latest/history",

java-iam-policy/README.md

@@ -1,6 +1,6 @@
-# Google IAM Client for Java
+# Google Cloud IAM Policy Client for Java
 
-Java idiomatic client for [IAM][product-docs].
+Java idiomatic client for [Cloud IAM Policy][product-docs].
 
 [![Maven][maven-version-image]][maven-version-link]
 ![Stability][stability-image]
@@ -64,14 +64,14 @@ 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 IAM APIs, and the authenticated principal must have the [IAM role(s)][predefined-iam-roles] required to access GCP resources using the IAM API calls.
+The client application making API calls must be granted [authorization scopes][auth-scopes] required for the desired Cloud IAM Policy APIs, and the authenticated principal must have the [IAM role(s)][predefined-iam-roles] required to access GCP resources using the Cloud IAM Policy API calls.
 
 ## Getting Started
 
 ### Prerequisites
 
-You will need a [Google Cloud Platform Console][developer-console] project with the IAM [API enabled][enable-api].
-You will need to [enable billing][enable-billing] to use Google IAM.
+You will need a [Google Cloud Platform Console][developer-console] project with the Cloud IAM Policy [API enabled][enable-api].
+You will need to [enable billing][enable-billing] to use Google Cloud IAM Policy.
 [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]`.
@@ -81,13 +81,13 @@ You will need to [enable billing][enable-billing] to use Google IAM.
 You'll need to obtain the `google-iam-policy` library.  See the [Quickstart](#quickstart) section
 to add `google-iam-policy` as a dependency in your code.
 
-## About IAM
+## About Cloud IAM Policy
 
 
-[IAM][product-docs] n/a
+[Cloud IAM Policy][product-docs] n/a
 
-See the [IAM client library docs][javadocs] to learn how to
-use this IAM Client Library.
+See the [Cloud IAM Policy client library docs][javadocs] to learn how to
+use this Cloud IAM Policy Client Library.
 
 
 
@@ -100,7 +100,7 @@ To get help, follow the instructions in the [shared Troubleshooting document][tr
 
 ## Transport
 
-IAM uses both gRPC and HTTP/JSON for the transport layer.
+Cloud IAM Policy uses both gRPC and HTTP/JSON for the transport layer.
 
 ## Supported Java Versions
 

librarian.yaml

@@ -2146,7 +2146,7 @@ libraries:
         - google-iam-policy
         - proto-google-iam-v1
       released_version: 1.90.0
-      name_pretty_override: IAM
+      name_pretty_override: Cloud IAM Policy
       product_documentation_override: n/a
   - name: iamcredentials
     version: 2.93.0