docs: Add image shortcut example for Batch HPC CentOS Image

Google APIs · copybara-github · commit dcd6ad773716 · 2023-07-04T00:58:31.000-07:00
PiperOrigin-RevId: 545368122
diff --git a/google/cloud/batch/v1/job.proto b/google/cloud/batch/v1/job.proto
@@ -141,6 +141,7 @@ message JobStatus {
 
   // Valid Job states.
   enum State {
+    // Job state unspecified.
     STATE_UNSPECIFIED = 0;
 
     // Job is admitted (validated and persisted) and waiting for resources.
@@ -262,6 +263,7 @@ message AllocationPolicy {
       // * "batch-debian": use Batch Debian images.
       // * "batch-centos": use Batch CentOS images.
       // * "batch-cos": use Batch Container-Optimized images.
+      // * "batch-hpc-centos": use Batch HPC CentOS images.
       string image = 4;
 
       // Name of a snapshot used as the data source.
