fix broken links

Author: PhilKang0704

articles/private-link/toc.yml

@@ -136,11 +136,11 @@
   - Name: Network security perimeter
     items:
     - name: Azure CLI
-      href: /cli/azure/network/network-security-perimeter
+      href: /azure/private-link/create-network-security-perimeter-cli
     - name: Azure PowerShell
       href: /powershell/module/az.network
     - name: .NET
-      href: /dotnet/api/overview/azure/private-link
+      href: /azure/application-gateway/private-link
     - name: Java
       href: /java/api/
     - name: Node.js

articles/sentinel/TOC.yml

@@ -897,7 +897,7 @@
     - name: Query best practices
       href: /kusto/query/best-practices?toc=/azure/sentinel/TOC.json&bc=/azure/sentinel/breadcrumb/toc.json
     - name: SQL to KQL cheat sheet
-      href: /kusto/query/sqlcheatsheet?toc=/azure/sentinel/TOC.json&bc=/azure/sentinel/breadcrumb/toc.json
+      href: /kusto/query/sql-cheat-sheet?view=microsoft-fabric
     - name: Splunk to KQL cheat sheet
       href: /kusto/query/splunk-cheat-sheet?toc=/azure/sentinel/TOC.json&bc=/azure/sentinel/breadcrumb/toc.json
     - name: KQL quick reference