fix(emqx_bridge_kafka): match example in api schema

apps/emqx_bridge_kafka/src/emqx_bridge_kafka.erl

@@ -112,16 +112,15 @@ values({put, connector}) ->
 values({put, KafkaType}) ->
     maps:merge(values(common_config), values(KafkaType));
 values(bridge_v2_producer) ->
-    maps:merge(
     #{
         enable => true,
         connector => <<"my_kafka_producer_connector">>,
+        parameters => values(producer_values),
+        local_topic => <<"mqtt/local/topic">>,
         resource_opts => #{
             health_check_interval => "32s"
         }
-        },
-        values(producer)
-    );
+    };
 values(common_config) ->
     #{
         authentication => #{
@@ -143,7 +142,11 @@ values(common_config) ->
     };
 values(producer) ->
     #{
-        kafka => #{
+        kafka => values(producer_values),
+        local_topic => <<"mqtt/local/topic">>
+    };
+values(producer_values) ->
+    #{
         topic => <<"kafka-topic">>,
         message => #{
             key => <<"${.clientid}">>,
@@ -174,8 +177,6 @@ values(producer) ->
             segment_bytes => <<"100MB">>,
             memory_overload_protection => true
         }
-        },
-        local_topic => <<"mqtt/local/topic">>
     };
 values(consumer) ->
     #{