https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/extensions/cluster-extensions#disabling-crd-preflight_crd-upgrade-safety
  
  The guide of "Disabling CRD upgrade safety preflight check" is not correct.

It should be:
The custom resource definition (CRD) upgrade safety preflight check can be disabled by setting the install.preflight.crdUpgradeSafety.enforcement to be None of the ClusterExtension

And the example of ClusterExtension is not correct
It should be 
apiVersion: olm.operatorframework.io/v1
kind: ClusterExtension
metadata:
  name: clusterextension-sample
spec:
  namespace: default
  serviceAccount:
    name: sa-example
  source:
    sourceType: "Catalog"
    catalog:
      packageName: argocd-operator
      version: 0.6.0
  install:
    preflight:
      crdUpgradeSafety:
        enforcement: None

    4.19

    always

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