Add links to next steps at the end of the enforce onboarding doc about edu

[amdawson]

more feedback
"I don't think the onboarding demo should go through creating 2 clusters, but it might be a good followup to link to at the end"

[amdawson]

"I was having so much fun I wanted to keep doing stuff (after going through onboarding)
but it would be cool to point you to the product docs / or a collection of tutorials to keep digging
we should extend with some guidance on creating more policies, using the information in the dashboard, remediating issues, etc."

[ltagliaferri]

This is a TODO for us, but we need to create these docs first 😄