fix indent in doc

docs/sources/api/docker_remote_api_v1.4.rst

@@ -762,7 +762,7 @@ Inspect an image
 	:statuscode 200: no error
 	:statuscode 404: no such image
 	:statuscode 409: conflict between containers and images
-        :statuscode 500: server error
+	:statuscode 500: server error
 
 
 Get the history of an image