Merge pull request #7433 from bmcelvee/dis-inst-typo

Fix command typo

Author: bmcelvee

install_config/install/disconnected_install.adoc

@@ -599,7 +599,7 @@ openshift_examples_modify_imagestreams=true
 Depending on your registry, you may need to configure:
 ----
 openshift_docker_additional_registries=example.com
-oopenshift_docker_insecure_registries=example.com
+openshift_docker_insecure_registries=example.com
 ----
 
 .Registry Variables