Follow-up from "User can create a group level cluster and install applications"

The following discussions from !22450 (merged) should be addressed:

• @ayufan started a discussion:

  I wish we could make this part of presenter.

  cluster.project_type? ? s_("ClusterIntegration|Project cluster") : s_("ClusterIntegration|Group cluster") 

• @mikegreiling started a discussion:

  This help page path will need to be updated when we add documentation for group clusters.