[Doc] Fix issue 6177 - Correct explanation for routing mode (apache#6244

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Fix apache#6177

site2/docs/concepts-messaging.md

@@ -283,7 +283,7 @@ The diagram below illustrates this:
 
 Here, the topic **Topic1** has five partitions (**P0** through **P4**) split across three brokers. Because there are more partitions than brokers, two brokers handle two partitions a piece, while the third handles only one (again, Pulsar handles this distribution of partitions automatically).
 
-Messages for this topic are broadcast to two consumers. The [routing mode](#routing-modes) determines both which broker handles each partition, while the [subscription mode](#subscription-modes) determines which messages go to which consumers.
+Messages for this topic are broadcast to two consumers. The [routing mode](#routing-modes) determines each message should be published to which partition, while the [subscription mode](#subscription-modes) determines which messages go to which consumers.
 
 Decisions about routing and subscription modes can be made separately in most cases. In general, throughput concerns should guide partitioning/routing decisions while subscription decisions should be guided by application semantics.