support rabbitmq
diff --git a/alpha/alpha-fsm/src/main/java/org/apache/servicecomb/pack/alpha/fsm/channel/rabbit/RabbitMessagePublisher.java b/alpha/alpha-fsm/src/main/java/org/apache/servicecomb/pack/alpha/fsm/channel/rabbit/RabbitMessagePublisher.java
index 05fc775..a441749 100644
--- a/alpha/alpha-fsm/src/main/java/org/apache/servicecomb/pack/alpha/fsm/channel/rabbit/RabbitMessagePublisher.java
+++ b/alpha/alpha-fsm/src/main/java/org/apache/servicecomb/pack/alpha/fsm/channel/rabbit/RabbitMessagePublisher.java
@@ -48,7 +48,7 @@
         if (LOG.isDebugEnabled()) {
             LOG.debug("send message [{}] to [{}]", data, partitionIndex);
         }
-        //partitionKey 分区的名称必须与配置中的key保持一致
+        // the headerName must consistent with partition key expression of spring cloud stream
         producerMessage.messageChannel().send(MessageBuilder.withPayload(data).setHeader("partitionKey", partitionIndex).build());
 
     }