Fixed links in ToC and hub page

Author: ntrogh

articles/lab-services/TOC.yml

@@ -57,7 +57,7 @@
   - name: Labs architecture fundamentals
     href: classroom-labs-fundamentals.md
   - name: Strategies for troubleshooting lab VMs
-    href: concept-strategies-troubleshoot-lab-vm.md
+    href: concept-approaches-troubleshoot-lab-vm.md
   - name: Capacity limits
     href: capacity-limits.md  
   - name: Cost management for labs

articles/lab-services/index.yml

@@ -75,8 +75,6 @@ landingContent:
             url: connect-virtual-machine.md
           - text: Set or reset passwords
             url: how-to-set-virtual-machine-passwords-student.md
-          - text: Strategies for troubleshooting lab VMs
-            url: concept-strategies-troubleshoot-lab-vm.md
   - title: Explore reference content
     linkLists:
       - linkListType: reference