test: explanatory comments [c-g]*

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5656103
diff --git a/test/decl.go b/test/decl.go
index 4a7d867..6f84245 100644
--- a/test/decl.go
+++ b/test/decl.go
@@ -4,7 +4,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Correct short declarations and redeclarations.
+// Test correct short declarations and redeclarations.
 
 package main