Set proper filter words

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/helpers/sorting_helper.rb

@@ -8,10 +8,10 @@ module SortingHelper
   end
 
   def sort_title_oldest_created
-    'Recently updated'
+    'Oldest created'
   end
 
   def sort_title_recently_created
-    'Recently updated'
+    'Recently created'
   end
 end