Internal knowledge base for Hubspot usage

I am now starting to document our way of working in Hubspot (how do our workflows go? how do we use the CRM in Hubspot? etc.). I am documenting this in Confluence, but it would be cool if  I'd be able to document this within the Hubspot tool. So I can actually link documentation on the workflow pages or maybe even in a particular workflow itself.

HubSpot updates