Correct commands and make them more visible.

Refs https://github.com/cakephp/cakephp/pull/4482

I used `cake bake [name]` as `bin/cake ...` would only be correct for some OS, while on others (WIN) it must be `.\bin\cake ...` for example.
So using the generic form here makes most sense. This also unifies it across the framework code since it has already been used this way in other places.