OCPBUGS#11231: Change registry examples

Author: xenolinux

modules/installation-initializing.adoc

@@ -616,10 +616,10 @@ endif::gcp+restricted[]
 imageContentSources:
 - mirrors:
   - <mirror_host_name>:5000/<repo_name>/release
-  source: quay.example.com/openshift-release-dev/ocp-release
+  source: quay.io/openshift-release-dev/ocp-release
 - mirrors:
   - <mirror_host_name>:5000/<repo_name>/release
-  source: registry.example.com/ocp/release
+  source: registry.redhat.io/ocp/release
 ----
 +
 ifndef::nutanix[]