docs: Rephrase reservation field doc

Google APIs · copybara-github · commit 349841abac6c · 2024-12-02T17:19:31.000-08:00
PiperOrigin-RevId: 702134577
diff --git a/google/cloud/batch/v1/job.proto b/google/cloud/batch/v1/job.proto
@@ -409,10 +409,10 @@ message AllocationPolicy {
     // storage and accessing.
     repeated AttachedDisk disks = 6;
 
-    // Optional. If specified, VMs will consume only the specified reservation.
-    // If not specified (default), VMs will consume any applicable reservation.
-    // Additionally, VMs will not consume any reservation if "NO_RESERVATION"
-    // is specified.
+    // Optional. If not specified (default), VMs will consume any applicable
+    // reservation. If "NO_RESERVATION" is specified, VMs will not consume any
+    // reservation. Otherwise, if specified, VMs will consume only the specified
+    // reservation.
     string reservation = 7 [(google.api.field_behavior) = OPTIONAL];
   }
 
