OSDOCS-11585-415-fix: adds file to topic map

Author: ShaunaDiaz

_topic_maps/_topic_map_ms.yml

@@ -488,6 +488,8 @@ Topics:
   File: microshift-troubleshoot-backup-restore
 - Name: Troubleshoot the cluster
   File: microshift-troubleshoot-cluster
+- Name: Troubleshoot etcd
+  File: microshift-etcd-troubleshoot
 - Name: Troubleshoot updates
   File: microshift-troubleshoot-updates
 - Name: Checking audit logs