Merge pull request #13724 from kalexand-rh/osdocs231

cluster customizations

Author: kalexand-rh

_topic_map.yml

@@ -42,6 +42,8 @@ Distros: openshift-*
 Topics:
 - Name: Architecture
   File: architecture
+- Name: Available cluster customizations
+  File: customizations
 - Name: Web console
   File: web-console
 ---