docs pages should be more reasonably ordered

[achou11]

apologies if there's a separate repo for the site containing the docs - couldn't find one based on a quick search.

currently the pages for the docs are ordered alphabetically based on the title of the page, which isn't conducive to a straightforward experience of reading the docs for the first time 😅

when you go to the docs page, you start at Get Started, but in terms of the listed pages that's in the middle visually, which is odd. while it's helpful that you list the recommended order to read the pages, think it would make more sense to have them ordered that way to begin with, and include "next" and "previous" buttons to go from one to another in sequential fashion.