Update TOC.yml

Author: denisebmsft

defender-endpoint/TOC.yml

@@ -909,8 +909,6 @@
           href: microsoft-defender-core-service-overview.md
         - name: Microsoft Defender Core service configurations and experimentation 
           href: microsoft-defender-core-service-configurations-and-experimentation.md
-        - name: Troubleshoot performance issues related to real-time protection
-          href: troubleshoot-performance-issues.md
         - name: Collect diagnostic data of Microsoft Defender Antivirus
           href: collect-diagnostic-data.md
 
@@ -920,7 +918,8 @@
           items:
           - name: Performance analyzer for Microsoft Defender Antivirus
             href: tune-performance-defender-antivirus.md
-
+          - name: Troubleshoot performance issues related to real-time protection
+            href: troubleshoot-performance-issues.md
         - name: Review event logs and error codes to troubleshoot issues with Microsoft Defender Antivirus
           href: troubleshoot-microsoft-defender-antivirus.yml
         - name: Troubleshoot Microsoft Defender Antivirus while migrating from a third-party solution