Fix typo in documentation for polymorphic associations w/STI. Closes #7461 [johnjosephbachir]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8305 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Fix typo in documentation for polymorphic associations w/STI. Closes #7461 [johnjosephbachir]
+
 * Reveal that the type option in migrations can be any supported column type for your database but also include caveat about agnosticism. Closes #7531 [adamwiggins, mikong]
 
 * More complete documentation for find_by_sql. Closes #7912 [fearoffish]

activerecord/lib/active_record/associations.rb

@@ -415,10 +415,10 @@ def clear_association_cache #:nodoc:
     #     has_many :assets, :as => :attachable, :dependent => :destroy
     #   end
     #
-    #   class GuestPost < ActiveRecord::Base
+    #   class GuestPost < Post
     #   end
     #
-    #   class MemberPost < ActiveRecord::Base
+    #   class MemberPost < Post
     #   end
     #
     # == Caching