* lib/ostruct.rb: [DOC] fix position of nodoc directive.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54525 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/ostruct.rb

@@ -71,8 +71,7 @@
 # of these properties compared to using a Hash or a Struct.
 #
 class OpenStruct
-  # :nodoc:
-  class << self
+  class << self # :nodoc:
     alias allocate new
   end