DOCSP-11191 content re-organization

Author: kanchana-mongodb

source/reference/atlas.txt

@@ -54,7 +54,6 @@ Atlas ``mongocli`` Commands
       Events </reference/atlas/event-commands>
       Logs </reference/atlas/log-commands>
       Metrics </reference/atlas/metric-commands>
-      Online Archives </reference/atlas/onlinearchive-commands>
       Processes </reference/atlas/process-commands>
       Whitelists </reference/atlas/whitelist-commands>
       Data Lakes </reference/atlas/datalake-commands>

source/reference/atlas/cluster-commands.txt

@@ -17,4 +17,5 @@ Atlas ``cluster`` Commands
    Pause a Cluster </reference/atlas/cluster-pause>
    Resume a Cluster </reference/atlas/cluster-start>
    Watch a Cluster </reference/atlas/cluster-watch>
+   Online Archives </reference/atlas/onlinearchive-commands>
    Create a Rolling Index </reference/atlas/clusters-indexes-create>