OCPBUGS-34815: Fix CAS expander example

Author: jeana-redhat

modules/cluster-autoscaler-config-priority-expander.adoc

@@ -58,10 +58,10 @@ metadata:
 data:
   priorities: |- # <3>
     10:
-      - *fast*
-      - *archive*
+      - .*fast.*
+      - .*archive.*
     40:
-      - *prod*
+      - .*prod.*
 ----
 <1> You must name config map `cluster-autoscaler-priority-expander`.
 <2> You must create the config map in the same namespace as cluster autoscaler pod, which is the `openshift-machine-api` namespace.