Add module for monitoring Azure VMs using diagnostics

Author: staleycyn

learn-pr/paths/az-104-monitor-backup-resources/index.yml

@@ -69,5 +69,6 @@ subjects:
 modules:
 - learn.introduction-to-azure-backup
 - learn.protect-virtual-machines-with-azure-backup
+- learn.azure.monitor-azure-vm-using-diagnostic-data
 trophy:
   uid: learn.az-104-monitor-backup-resources.trophy