add toc

Author: Oreoxmt

TOC.md

@@ -336,6 +336,7 @@
     - [Overview](/clinic/clinic-introduction.md)
     - [Quick Start](/clinic/quick-start-with-clinic.md)
     - [Troubleshoot TiDB Cluster Using PingCAP Clinic](/clinic/clinic-user-guide-for-tiup.md)
+    - [Collect SQL Query Plan Related Information](/clinic/clinic-collect-sql-query-plan.md)
     - [PingCAP Clinic Diagnostic Data](/clinic/clinic-data-instruction-for-tiup.md)
   - [TiDB Operator](/tidb-operator-overview.md)
   - [Dumpling](/dumpling-overview.md)

clinic/clinic-introduction.md

@@ -61,6 +61,7 @@ First, Diag gets cluster topology information from the deployment tool TiUP (tiu
 - Use PingCAP Clinic in an on-premise environment
     - [Quick Start with PingCAP Clinic](/clinic/quick-start-with-clinic.md)
     - [Troubleshoot TiDB Cluster using PingCAP Clinic](/clinic/clinic-user-guide-for-tiup.md)
+    - [Collect SQL Query Plan Related Information](/clinic/clinic-collect-sql-query-plan.md)
     - [PingCAP Clinic Diagnostic Data](/clinic/clinic-data-instruction-for-tiup.md)
 
 - Use PingCAP Clinic in Kubernetes