template: start sample workflow with more realistic step

Signed-off-by: Doug Hellmann <dhellmann@redhat.com>

guidelines/enhancement_template.md

@@ -136,16 +136,17 @@ cluster.
 **application administrator** is a human user responsible for
 deploying an application in a cluster.
 
-1. The cluster creator sits down at their keyboard...
+1. The cluster creator downloads the `openshift-install` binary from
+   redhat.com.
 2. ...
 3. The cluster creator sees that their cluster is ready to receive
    applications, and gives the application administrator their
    credentials.
 
 #### Variation [optional]
 
-If the cluster creator uses a standing desk, in step 1 above they can
-stand instead of sitting down.
+In a disconnected setting, the cluster creator could also extract the
+installer binary from a mirrored image.
 
 See
 https://github.com/openshift/enhancements/blob/master/enhancements/workload-partitioning/management-workload-partitioning.md#high-level-end-to-end-workflow