fixed a doc bug in the CHANGELOG.md s/does no longer depend on/no longer depends on/
Use ActiveRecord::Base#update! instead of #update_attributes!
Revert "fixed a doc bug in the CHANGELOG.md s/does no longer depend on/no longer depends on/"

This reverts commit 49f513c25415f94452af1bb8fe3f55f090a6d0f2.

Reason: Changelogs aren't supposed to be edited in docrails.
Merge branch 'master' of github.com:rails/docrails
grammar fix (reverted in e9a1ecd)