Update message-transfers-locks-settlement.md

Fix typo it -> it's and update grammar (I believe this sounds more correct)

Author: philip-young

articles/service-bus-messaging/message-transfers-locks-settlement.md

@@ -11,7 +11,7 @@ ms.custom: devx-track-csharp
 
 The central capability of a message broker such as Service Bus is to accept messages into a queue or topic and hold them available for later retrieval. *Send* is the term that is commonly used for the transfer of a message into the message broker. *Receive* is the term commonly used for the transfer of a message to a retrieving client.
 
-When a client sends a message, it usually wants to know whether the message has been properly transferred to and accepted by the broker or whether some sort of error occurred. This positive or negative acknowledgment settles the client and the broker understanding about the transfer state of the message. So, it' referred to as *settlement*.
+When a client sends a message, it usually wants to know whether the message has been properly transferred to and accepted by the broker or whether some sort of error occurred. This positive or negative acknowledgment settles the understanding of both the client and broker about the transfer state of the message. Therefore, it's referred to as a *settlement*.
 
 Likewise, when the broker transfers a message to a client, the broker and client want to establish an understanding of whether the message has been successfully processed and can therefore be removed, or whether the message delivery or processing failed, and thus the message might have to be delivered again.
 
@@ -127,4 +127,4 @@ The default value for the lock duration is **30 seconds**. You can specify a dif
 ## Next steps
 - A special case of settlement is deferral. See the [Message deferral](message-deferral.md) for details. 
 - To learn about dead-lettering, see [Dead-letter queues](service-bus-dead-letter-queues.md).
-- To learn more about Service Bus messaging in general, see [Service Bus queues, topics, and subscriptions](service-bus-queues-topics-subscriptions.md)
+- To learn more about Service Bus messaging in general, see [Service Bus queues, topics, and subscriptions](service-bus-queues-topics-subscriptions.md)