Update resources webpage w/ new booklets
This page should be updated soon:
Since the booklet pdfs are now part of the build process, we should probably get a generic link that always points to the latest pdf for each booklet.
For example, this:
Instead of this:
And then we can link to the booklets on the resources page.
Note to : All references to leanpub should be removed, as this is a deprecated version. This change needs to be made before Strata, as all the booklets have been published with links to h2o.ai/resources.