update code example

Signed-off-by: Aolin <aolin.zhang@pingcap.com>

Author: Oreoxmt

ticdc/ticdc-integrity-check.md

@@ -38,7 +38,7 @@ TiCDC disables data integrity validation by default. To enable it, perform the f
 3. When using Avro as the data encoding format, you need to set [`enable-tidb-extension=true`](/ticdc/ticdc-sink-to-kafka.md#configure-sink-uri-for-kafka) in the [`sink-uri`](/ticdc/ticdc-sink-to-kafka.md#configure-sink-uri-for-kafka). To prevent numerical precision loss during network transmission, which can cause checksum validation failures, you also need to set [`avro-decimal-handling-mode=string`](/ticdc/ticdc-sink-to-kafka.md#configure-sink-uri-for-kafka) and [`avro-bigint-unsigned-handling-mode=string`](/ticdc/ticdc-sink-to-kafka.md#configure-sink-uri-for-kafka). The following is an example:
 
     ```shell
-    cdc cli changefeed create --server=http://127.0.0.1:8300 --changefeed-id="kafka-avro-enable-extension" --sink-uri="kafka://127.0.0.1:9092/topic-name?protocol=avro&enable-tidb-extension=true&avro-decimal-handling-mode=string&avro-bigint-unsigned-handling-mode=string" --schema-registry=http://127.0.0.1:8081 --config changefeed_config.toml
+    cdc cli changefeed create --server=http://127.0.0.1:8300 --changefeed-id="kafka-avro-checksum" --sink-uri="kafka://127.0.0.1:9092/topic-name?protocol=avro&enable-tidb-extension=true&avro-decimal-handling-mode=string&avro-bigint-unsigned-handling-mode=string" --schema-registry=http://127.0.0.1:8081 --config changefeed_config.toml
     ```
 
     With the preceding configuration, each message written to Kafka by the changefeed will include the corresponding data's checksum. You can verify data consistency based on these checksum values.