Note: Doc team updates the current version of the documentation and the
two previous versions (n-2), but we address *only high-priority, or
customer-reported issues* for -2 releases in support.
Describe the changes in the doc and link to your dev story:

1. - [x] Mandatory: Add the required version to the Fix version/s field.

2. - [ x Mandatory: Choose the type of documentation change or review.

• [x] We need to update to an existing topic

• [ ] We need to add a new document to an existing section

• [ ] We need a whole new section; this is a function not
  documented before and doesn't belong in any current section

• [ ] We need an Operator Advisory review and approval

• [ ] We need a z-Stream (Errata) Advisory and Release note
  for MCE and/or ACM

3. - [x] *Mandatory: *Use the following link to open the doc and find where the
documentation update should go. Note: As the feature and doc is
understood and developed, this placement decision may change:

• https://github.com/stolostron/rhacm-docs/blob/2.12_stage/clusters/cluster_lifecycle/create_clustersetbinding.adoc 

4. - [ ] Mandatory for GA content:

Updating the ManagedClusterSetBinding resource example by changing <cluster_name> to <cluster_set> 

5. - [ ] Mandatory for bugs: What is the diff? Clearly define what the
problem is, what the change is, and link to the current documentation. Only
use this for a documentation bug.

Related PR: https://github.com/stolostron/rhacm-docs/pull/6937/files