TOC and Welcome card updates

Author: ryanberg-aquent

support/azure/azure-kubernetes/toc.yml

@@ -261,8 +261,10 @@ items:
       href: extensions/changes-in-kubernetes-event-driven-autoscaling-add-on-214-215.md
     - name: Troubleshoot KEDA add-on
       href: extensions/troubleshoot-kubernetes-event-driven-autoscaling-add-on.md      
-- name: Troubleshoot error codes
+- name: Troubleshoot by error codes
   items:
+  - name: Azure Kubernetes Service (AKS) error codes
+    href: error-codes/aks-error-code-page.md
   - name: 429 Too Many Requests errors
     href: create-upgrade-delete/429-too-many-requests-errors.md
   - name: A-K

support/azure/azure-kubernetes/welcome-azure-kubernetes.yml

@@ -182,11 +182,10 @@ landingContent:
             url: ./identify-memory-saturation-aks.md
 
  # Card 
-  - title: Troubleshoot common issues
+  - title: Troubleshoot AKS error codes
     linkLists:
       - linkListType: how-to-guide
         links:
-          - text: Troubleshoot common issues with Azure Linux container hosts on AKS
-            url: ./troubleshoot-common-azure-linux-aks.md
-          - text: Troubleshoot DNS resolution problems on AKS clusters
-            url: connectivity/dns/basic-troubleshooting-dns-resolution-problems.md
+          - text: Azure Kubernetes Service (AKS) error codes
+            url: ./aks-error-code-page.md
+