Add image API version to the reno

During the review I44852225ac8d3cb45bd04685e214fb39576b8206 , the comment
was up for adding the image API version to the corresponding reno.
This patch is for the following-up.

Partially implements blueprint consistent-service-method-names

Change-Id: Ic67ef30a4eff3438b118c6ac74639e51e61441a6
diff --git a/releasenotes/notes/image-clients-as-library-86d17caa26ce3961.yaml b/releasenotes/notes/image-clients-as-library-86d17caa26ce3961.yaml
index 1ba790c..faae7d0 100644
--- a/releasenotes/notes/image-clients-as-library-86d17caa26ce3961.yaml
+++ b/releasenotes/notes/image-clients-as-library-86d17caa26ce3961.yaml
@@ -6,8 +6,8 @@
     so the other projects can use these modules as stable libraries
     without any maintenance changes.
 
-      * image_members_client
-      * images_client
-      * namespaces_client
-      * resource_types_client
-      * schemas_client
+      * image_members_client(v2)
+      * images_client(v2)
+      * namespaces_client(v2)
+      * resource_types_client(v2)
+      * schemas_client(v2)