Formatting fix in AS changelog [ci skip]
Revert "Formatting fix in AS changelog [ci skip]"

This reverts commit cede0363830e28e73feafc662eccae7d1db526bb.

Reason: CHANGELOG should not be updated on docrails
[ci skip] Add missing colon and period in initialization.md.
Merge branch 'master' of github.com:rails/docrails