Create an informative issue (See each section, incomplete templates/issues won't be triaged)

Using the current documentation as a model, please complete the issue template. 

Note: Doc team updates the current version and the two previous versions (n-2). For earlier versions, we will address only high-priority, customer-reported issues for releases in support.

Prerequisite: Start with what we have

Always look at the current documentation to describe the change that is needed. Use the source or portal link for Step 4:

 - Use the Customer Portal: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes

 - Use the GitHub link to find the staged docs in the repository: https://github.com/stolostron/rhacm-docs 

Describe the changes in the doc and link to your dev story

• We have tasks that are not tasks...they are prereqs and a link to another task

hosted-control-planes-manage-bm-ibmpower
= Managing hosted control plane clusters on 64-bit x86 bare metal to attach to IBM Power compute nodes (Technology Preview)

hosted-control-planes-manage-bm-ibmz
= Managing the hosted control plane clusters on x86 bare metal to attach IBM Z compute nodes (Technology Preview)

You can use the {mce} to create and manage a Red Hat {ocp-short} hosted cluster. Hosted control planes are available as a Technology Preview on bare metal with IBM Z.

• File name fixes and URL fixes where I didn't get to last week, as well.
• We need a few title changes fro conciseness.