ref: updating vdl files as per go/vcl/8809

MultiPart: 2/3
Change-Id: Ic3ffaf0a444309b48fbb424dd33628629f60a323
diff --git a/cmd/build/doc.go b/cmd/build/doc.go
index 95bb885..0980385 100644
--- a/cmd/build/doc.go
+++ b/cmd/build/doc.go
@@ -1,3 +1,7 @@
+// Copyright 2015 The Vanadium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // This file was auto-generated via go generate.
 // DO NOT UPDATE MANUALLY