src/pkg: make package doc comments consistently start with "Package foo".
R=rsc
CC=golang-dev
https://golang.org/cl/4442064
diff --git a/src/pkg/utf8/utf8.go b/src/pkg/utf8/utf8.go
index 455499e..f542358 100644
--- a/src/pkg/utf8/utf8.go
+++ b/src/pkg/utf8/utf8.go
@@ -2,8 +2,8 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-// Functions and constants to support text encoded in UTF-8.
-// This package calls a Unicode character a rune for brevity.
+// Package utf8 implements functions and constants to support text encoded in
+// UTF-8. This package calls a Unicode character a rune for brevity.
package utf8
import "unicode" // only needed for a couple of constants
