I really, really, don't understand gitlab docs...
I am trying to understand how to make a god damn changelog entry, I have a changelog.md file, here are the gitlab docs about this: https://docs.gitlab.com/ce/development/changelog.html
But I don't understand where I have to write that, for example
$ bin/changelog 'Hey DZ, I added a feature to GitLab!'
It must be a terminal but where? And what's that '$'...