fix major-mode for emacs

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39480 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-02-25 00:44:08 +00:00 · 2013-02-25 00:44:08 +00:00 · 1a76bf3911
--- a/3
+++ b/3
@ -1,4 +1,5 @@
-# -*- rd -*-
+# -*- rdoc -*-
+
 = NEWS for Ruby 2.1.0

 This document is a list of user visible feature changes made between