[Docs] update debezium json document (#6652)

Author: liunaijie

Diff for: docs/en/connector-v2/formats/debezium-json.md

@@ -68,6 +68,12 @@ The MySQL products table has 4 columns (id, name, description and weight).
 The above JSON message is an update change event on the products table where the weight value of the row with id = 111 is changed from 5.18 to 5.15.
 Assuming the messages have been synchronized to Kafka topic products_binlog, then we can use the following Seatunnel conf to consume this topic and interpret the change events by Debezium format.
 
+**In this config, you must specify the `schema` and `debezium_record_include_schema` options **
+- `schema` should same with your table format
+- if your json data contains `schema` field, `debezium_record_include_schema` should be true, and if your json data doesn't contains `schema` field, `debezium_record_include_schema` should be false
+- `{"schema" : {}, "payload": { "before" : {}, "after": {} ... } }` --> `true`
+- `{"before" : {}, "after": {} ... }` --> `false`
+
 ```bash
 env {
     parallelism = 1
@@ -88,6 +94,7 @@ source {
            weight = "string"
       }
     }
+    debezium_record_include_schema = false
     format = debezium_json
   }