Need a note:  hostprefix need to be keep same if there are multiple network when installing cluster 

https://docs.openshift.com/container-platform/4.16/installing/installing_azure/installing-azure-network-customizations.html#nw-operator-cr_installing-azure-network-customizations

Here the example are correct.  However we may need to add a note: hostPrefix should be keep same when multiple network.  in case customer used different value. 

spec:
  clusterNetwork:
  - cidr: 10.128.0.0/19
    hostPrefix: 23
  - cidr: 10.128.32.0/19
    hostPrefix: 23



And all versions and platform for this part need to be updated. 

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