Fixed Indent issue

Author: Michael Bender

articles/virtual-network-manager/TOC.yml

@@ -66,7 +66,7 @@
     - name: Query Azure Virtual Network Manager using Azure Resource Graph (ARG)
       href: query-azure-resource-graph.md
     - name: User-defined routes (UDRs) management 
-    href: concept-user-defined-route.md
+      href: concept-user-defined-route.md
 - name: Samples
   items:
     - name: Resource Manager Templates