Update docs/topics/templates/document-attributes.adoc

Author: anarnold97

docs/topics/templates/document-attributes.adoc

@@ -38,7 +38,7 @@ ifdef::mta[]
 :ocp-full: OpenShift Container Platform
 :ocp-short: OpenShift
 :ocp: OCP
-:ocp-version: 4.18
+:ocp-version: 4.17
 :ocp-supported: 4.18, 4.17, 4.16
 endif::[]