client-go/discovery: fix godoc package comment

staging/src/k8s.io/client-go/discovery/BUILD

@@ -11,6 +11,7 @@ go_library(
     srcs = [
         "cached_discovery.go",
         "discovery_client.go",
+        "doc.go",
         "helper.go",
         "round_tripper.go",
         "unstructured.go",

staging/src/k8s.io/client-go/discovery/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package discovery provides ways to discover server-supported
+// API groups, versions and resources.
+package discovery

staging/src/k8s.io/client-go/discovery/round_tripper.go

@@ -14,7 +14,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// Package transport provides a round tripper capable of caching HTTP responses.
 package discovery
 
 import (