Consistent formatting of the reference page

[kaitlinnewson]

How could the content be improved?

Make the formatting of the reference page more consistent. Currently it uses a mix of dashes, spacing, and colons after commands, and there is some content (e.g. under rm) that should use bullets for consistency.

Which part of the content does your suggestion apply to?

https://librarycarpentry.org/lc-shell/reference.html