rails/rails — pull request #18088 by daryllxd (2014-12-18 18:35:40+00:00)
Title: Change dead links in ActiveModel README to api.rubyonrails.org links.

Not sure if this is the right way to go about (first time contributor) but I just noticed that the links on the READMEs are dead, I changed them to the `api.rubyonrails.org` links. Will do the rest (ActiveRecord etc.) if need be.