Fixing typo in whiny_thumbnails

lib/paperclip/attachment.rb

@@ -265,7 +265,7 @@ module Paperclip
                                                    dimensions,
                                                    dimensions,
                                                    format, 
                                                    format, 
                                                    extra_options_for(name),
                                                    extra_options_for(name),
-                                                   @whiny_thumnbails)
+                                                   @whiny_thumbnails)
         rescue PaperclipError => e
         rescue PaperclipError => e
           @errors << e.message if @whiny_thumbnails
           @errors << e.message if @whiny_thumbnails
         end
         end