Add docs for multiple order_by

[BlackVegetable]

Issue Summary

The existing order_by uses in the documentation do not mention how to perform multiple order_bys which mean a primary ordering with a secondary tiebreaker (and possibly tertiary etc.) This should probably be added to the "Advanced" section to avoid overwhelming someone looking for the more common case of ordering by a single property.

We should probably also explain the difference between "result" and the other properties you can order by with an order_by.

Steps to Reproduce

Open Docs

Technical details:

N/A

[tbarn]

I'm going to work on this next week!