cdc: add ticdc checksum verification sample (#14337)

Author: 3AceShowHand

TOC.md

@@ -547,7 +547,9 @@
         - [TiCDC CSV Protocol](/ticdc/ticdc-csv.md)
       - [TiCDC Open API v2](/ticdc/ticdc-open-api-v2.md)
       - [TiCDC Open API v1](/ticdc/ticdc-open-api.md)
-      - [Storage sink 消费程序编写指引](/ticdc/ticdc-storage-consumer-dev-guide.md)
+      - TiCDC 数据消费
+        - [基于 Avro 的 TiCDC 行数据 Checksum 校验](/ticdc/ticdc-avro-checksum-verification.md)
+        - [Storage sink 消费程序编写指引](/ticdc/ticdc-storage-consumer-dev-guide.md)
       - [兼容性](/ticdc/ticdc-compatibility.md)
     - [故障处理](/ticdc/troubleshoot-ticdc.md)
     - [常见问题解答](/ticdc/ticdc-faq.md)