Improve find/2 and find/3 doc, and fix spec (#632)
Improve find/2 and find/3 doc, and fix spec (#632)

Co-authored-by: Mitchell Hanberg <b2b9d047cb15a4ee2f66e3be0a97e512d2f22473@mitchellhanberg.com>
keathley/wallaby,keathley/wallaby