rails/rails — pull request #13214 by JuanitoFatas (2013-12-06 15:01:09+00:00)
Title: Some improvements on building nested forms. [ci skip]

* Change 9.2 title from Building the Form to Building Nested Form.
* Make the example of 9.2 met with example below.
* 9.4 punctuation fixes & readability (inline code snippet).
* Fix 9.4 code example