Updated TOC for Monitor Section

Updated TOC for Monitor Section

Author: sreekzz

articles/hdinsight/TOC.yml

@@ -259,10 +259,13 @@ items:
       items:
       - name: Monitor
         href: monitor-hdinsight.md
-      - name: Use Azure Monitor logs
-        href: ./hdinsight-hadoop-oms-log-analytics-tutorial.md
-      - name: Use selective logging to monitor logs
-        href: ./selective-logging-analysis.md
+        items: 
+        - name: Use Azure Monitor Logs
+          items:
+          - name: Use Azure Monitor Logs
+            href: ./hdinsight-hadoop-oms-log-analytics-tutorial.md
+          - name: Use selective logging to monitor logs
+            href: ./selective-logging-analysis.md    
       - name: Use queries with Azure Monitor logs
         href: ./hdinsight-hadoop-oms-log-analytics-use-queries.md
       - name: Monitor cluster performance