Merge pull request #90953 from openshift-cherrypick-robot/cherry-pick-89929-to-main

[main] Version change from 4.17 to 4.18 in navigation bar

Author: bergerhoffer

_topic_maps/_topic_map.yml

@@ -750,10 +750,10 @@ Topics:
 - Name: Preparing to update a cluster
   Dir: preparing_for_updates
   Topics:
-  - Name: Preparing to update to OpenShift Container Platform 4.17
+  - Name: Preparing to update to OpenShift Container Platform 4.18
     File: updating-cluster-prepare
     Distros: openshift-enterprise
-  - Name: Preparing to update to OKD 4.17
+  - Name: Preparing to update to OKD 4.18
     File: updating-cluster-prepare
     Distros: openshift-origin
   - Name: Preparing to update a cluster with manually maintained credentials