cmd/protoc-gen-go: add link to devsite for protoc-gen-go
Change-Id: I67a0897df42e177782ec76bb307ea2334f86975e
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/220596
Reviewed-by: Damien Neil <dneil@google.com>
diff --git a/cmd/protoc-gen-go/main.go b/cmd/protoc-gen-go/main.go
index e1dc52c..2cb3911 100644
--- a/cmd/protoc-gen-go/main.go
+++ b/cmd/protoc-gen-go/main.go
@@ -2,8 +2,11 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-// The protoc-gen-go binary is a protoc plugin to generate a Go protocol
-// buffer package.
+// The protoc-gen-go binary is a protoc plugin to generate Go code for
+// both proto2 and proto3 versions of the protocol buffer language.
+//
+// For more information about the usage of this plugin, see:
+// https://developers.google.com/protocol-buffers/docs/reference/go-generated
package main
import (
