Fix broken links - spelluru

Author: Albertyang0

articles/service-bus-messaging/service-bus-sas.md

@@ -168,7 +168,7 @@ If you give a sender or client a SAS token, they don't have the key directly, an
 
 ## Use the Shared Access Signature (at AMQP level)
 
-In the previous section, you saw how to use the SAS token with an HTTP POST request for sending data to the Service Bus. As you know, you can access Service Bus using the Advanced Message Queuing Protocol (AMQP) that is the preferred protocol to use for performance reasons, in many scenarios. The SAS token usage with AMQP is described in the document [AMQP Claim-Based Security Version 1.0](https://www.oasis-open.org/committees/download.php/50506/amqp-cbs-v1%200-wd02%202013-08-12.doc) that is in working draft since 2013 but it's supported by Azure today.
+In the previous section, you saw how to use the SAS token with an HTTP POST request for sending data to the Service Bus. As you know, you can access Service Bus using the Advanced Message Queuing Protocol (AMQP) that is the preferred protocol to use for performance reasons, in many scenarios. The SAS token usage with AMQP is described in the document [AMQP Claim-Based Security Version 1.0](https://docs.oasis-open.org/amqp/amqp-cbs/v1.0/csd01/amqp-cbs-v1.0-csd01.docx) that is in working draft since 2013 but it's supported by Azure today.
 
 Before starting to send data to Service Bus, the publisher must send the SAS token inside an AMQP message to a well-defined AMQP node named **$cbs** (you can see it as a "special" queue used by the service to acquire and validate all the SAS tokens). The publisher must specify the **ReplyTo** field inside the AMQP message; it's the node in which the service replies to the publisher with the result of the token validation (a simple request/reply pattern between publisher and service). This reply node is created "on the fly," speaking about "dynamic creation of remote node" as described by the AMQP 1.0 specification. After checking that the SAS token is valid, the publisher can go forward and start to send data to the service.