Update concepts-messaging.md (#772)

crossoverJie · Technoboy- · commit b6231af06599 · 2024-02-05T16:51:25.000+08:00
diff --git a/docs/concepts-messaging.md b/docs/concepts-messaging.md
@@ -336,7 +336,7 @@ The default dead letter topic uses this format:
 The dead letter producerName uses this format:
 
 ```
-<topicname>-<subscriptionname>-DLQ
+<topicname>-<subscriptionname>-<consumername>-DLQ
 ```
 
 :::note
