Merge "Fix api-ref for POST backup for optional name"

api-ref/source/v3/ext-backups.inc

@@ -228,7 +228,7 @@ Request
    - volume_id: volume_id
    - force: force
    - backup: backup
-   - name: name
+   - name: name_optional
    - snapshot_id: snapshot_id_2
    - project_id: project_id_path
 

api-ref/source/v3/parameters.yaml

@@ -1340,6 +1340,12 @@ name_9:
   in: body
   required: true
   type: string
+name_optional:
+  description: |
+    The name of the Volume Backup.
+  in: body
+  required: false
+  type: string
 namespace:
   description: |
     Link associated to the extension.