OSDOCS-6646: remove CIDR from clusterNetwork parameter

Author: ShaunaDiaz

modules/microshift-config-yaml.adoc

@@ -19,7 +19,7 @@ dns:
   baseDomain: microshift.example.com <1>
 network:
   clusterNetwork:
-    - cidr: 10.42.0.0/16 <2>
+    - 10.42.0.0/16 <2>
   serviceNetwork:
     - 10.43.0.0/16 <3>
   serviceNodePortRange: 30000-32767 <4>