Add new Documentation section?

[stefaniebutland]

We're experimenting with a 6-lesson series in which Call 2 introduces Pathways in more depth, and adds a new section on Documentation. Maybe Corey and Anna have some documentation on Documentation that we could add.

[jules32]

Great idea; we can add it to the additional lessons section (we can add an index.md at the same time!)

e.g. https://openscapes.github.io/series/additional-lessons/code-of-conduct.html

[stefaniebutland]

See PR #18