Add missing 'transfer' parameter in API document

This patch adds the missing parameter 'transfer' to accept
transfer's API document.

Change-Id: I88f0a01ef22be9ff1b483e517f08866a7e1b19ce

api-ref/source/v2/os-vol-transfer-v2.inc

@@ -27,6 +27,7 @@ Request
 .. rest_parameters:: parameters.yaml
 
    - auth_key: auth_key
+   - transfer: transfer
    - transfer_id: transfer_id
    - project_id: project_id_path
 
@@ -72,6 +73,8 @@ Request
 
 .. rest_parameters:: parameters.yaml
 
+   - project_id: project_id_path
+   - transfer: transfer
    - name: name
    - volume_id: volume_id
    - project_id: project_id_path

api-ref/source/v2/parameters.yaml

@@ -1586,6 +1586,12 @@ totalVolumesUsed:
   in: body
   required: true
   type: integer
+transfer:
+  description: |
+    The volume transfer object.
+  in: body
+  required: true
+  type: object
 updated:
   description: |
     The date and time stamp when the extension was

api-ref/source/v3/os-vol-transfer-v3.inc

@@ -41,6 +41,7 @@ Response Parameters
 
 .. rest_parameters:: parameters.yaml
 
+   - transfer: transfer
    - volume_id: volume_id
    - id: id
    - links: links