docs(storage): update README.md with new sample

[Generated-by: AI]

Author: nidhiii-27

java-storage/README.md

@@ -311,6 +311,7 @@ Samples are in the [`samples/`](https://github.com/googleapis/google-cloud-java/
 | Create Folder | [source code](https://github.com/googleapis/google-cloud-java/blob/main/samples/snippets/src/main/java/com/example/storage/control/v2/CreateFolder.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-java&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/storage/control/v2/CreateFolder.java) |
 | Create Hierarchical Namespace Bucket | [source code](https://github.com/googleapis/google-cloud-java/blob/main/samples/snippets/src/main/java/com/example/storage/control/v2/CreateHierarchicalNamespaceBucket.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-java&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/storage/control/v2/CreateHierarchicalNamespaceBucket.java) |
 | Delete Folder | [source code](https://github.com/googleapis/google-cloud-java/blob/main/samples/snippets/src/main/java/com/example/storage/control/v2/DeleteFolder.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-java&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/storage/control/v2/DeleteFolder.java) |
+| Delete Folder Recursive | [source code](https://github.com/googleapis/google-cloud-java/blob/main/samples/snippets/src/main/java/com/example/storage/control/v2/DeleteFolderRecursive.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-java&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/storage/control/v2/DeleteFolderRecursive.java) |
 | Get Folder | [source code](https://github.com/googleapis/google-cloud-java/blob/main/samples/snippets/src/main/java/com/example/storage/control/v2/GetFolder.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-java&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/storage/control/v2/GetFolder.java) |
 | List Folders | [source code](https://github.com/googleapis/google-cloud-java/blob/main/samples/snippets/src/main/java/com/example/storage/control/v2/ListFolders.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-java&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/storage/control/v2/ListFolders.java) |
 | Rename Folder | [source code](https://github.com/googleapis/google-cloud-java/blob/main/samples/snippets/src/main/java/com/example/storage/control/v2/RenameFolder.java) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/google-cloud-java&page=editor&open_in_editor=samples/snippets/src/main/java/com/example/storage/control/v2/RenameFolder.java) |