[ruby/time] Fix wrong result in Time.rfc2822 documentation

(ruby/time#76)

The sample code and its result in the Time.rfc2822 documentation appear to be inconsistent.

ruby/time@b602d284aa

Author: thyogo

lib/time.rb

@@ -510,7 +510,7 @@ def strptime(date, format, now=self.now)
     #     require 'time'
     #
     #     Time.rfc2822("Wed, 05 Oct 2011 22:26:12 -0400")
-    #     #=> 2010-10-05 22:26:12 -0400
+    #     #=> 2011-10-05 22:26:12 -0400
     #
     # You must require 'time' to use this method.
     #