Merge pull request #19937 from tak1n/master

Fixed typo in documentation

activerecord/lib/active_record/nested_attributes.rb

@@ -147,8 +147,8 @@ class TooManyRecords < ActiveRecordError
     #     has_many :posts
     #     accepts_nested_attributes_for :posts, reject_if: :reject_posts
     #
-    #     def reject_posts(attributed)
-    #       attributed['title'].blank?
+    #     def reject_posts(attributes)
+    #       attributes['title'].blank?
     #     end
     #   end
     #