Migrate https://github.com/atom/flight-manual.atom.io/pull/699

[icecream17]

Also going to mention atom/flight-manual.atom.io#631

[confused-Techie]

While this would be a smart thing to add for our current documentation. My concern is that looks to be a file within the archived Atom Docs. Are we modifying their work in other areas? I was under the assumption that the original Atom docs are essentially untouched, which in my opinion means to leave any mistakes, just as long as we correct them ourselves.

@pulsar-edit/documentation Is this a correct assumption?

[icecream17]

I didn't remember that when I made this pull, oops...

Yeah I vaguely remember something like that being said?

[Daeraxa]

If this change isn't merged on the atom repo then we should leave it as it is but we absolutely should include it into the refactored docs.

It just so happens the PR for ch2 is still pending review (#59) so feel free to add the change as a suggestion to that PR.