doc: revert copyright date to 2009

Somehow this date was changed in error (by me) to 2012.
It should have always been 2009.

Change-Id: I87029079458d4c4eeeff2f2fc0574f10afa9af09
Reviewed-on: https://go-review.googlesource.com/23622
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Andrew Gerrand 2016-06-02 08:11:01 +10:00
parent 6de014b9e2
commit d0c1888739

View file

@ -1,4 +1,4 @@
Copyright (c) 2012 The Go Authors. All rights reserved.
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are