Added step for finalizers

Author: Shubha Narayanan

modules/cert-manager-remove-resources-console.adoc

@@ -38,6 +38,13 @@ $ oc delete deployment -n cert-manager -l app.kubernetes.io/instance=cert-manage
 
 . Optional: Remove the custom resource definitions (CRDs) that were installed by the {cert-manager-operator}:
 
+.. Remove the finalizers from the `CertManager` custom resource (CR) by running the following command:
++
+[source,terminal]
+----
+$ oc patch certmanagers.operator cluster --type=merge -p='{"metadata":{"finalizers":null}}'
+----
+
 .. Navigate to *Administration* -> *CustomResourceDefinitions*.
 
 .. Enter `certmanager` in the *Name* field to filter the CRDs.