Add microversion and volume status limit to revert api ref doc
@@ -107,7 +107,10 @@ Revert volume to snapshot
.. rest_method:: POST /v3/{project_id}/volumes/{volume_id}/action
-Revert a volume to its latest snapshot, this API only support reverting a detached volume.
+Revert a volume to its latest snapshot, this API only support reverting a detached volume,
+and the volume status must be ``available``.
+
+Available since API microversion ``3.40``.
Normal response codes: 202
