QOS tag section clarification

clarify restrictions on QOS tags for traffic

Author: AAron

articles/expressroute/expressroute-qos.md

@@ -32,7 +32,8 @@ The following table provides a list of DSCP markings used by Microsoft Teams and
 
 * You should classify the workloads and mark the right DSCP values. Follow the guidance provided [here](/SkypeForBusiness/manage/network-management/qos/configuring-port-ranges-for-your-skype-clients#configure-quality-of-service-policies-for-clients-running-on-windows-10) on how to set DSCP markings in your network.
 * You should configure and support multiple QoS queues within your network. Voice must be a standalone class and receive the EF treatment specified in [RFC 3246](https://www.ietf.org/rfc/rfc3246.txt). 
-* You can decide the queuing mechanism, congestion detection policy, and bandwidth allocation per traffic class. But, the DSCP marking for Skype for Business workloads must be preserved. If you are using DSCP markings not listed above, e.g. AF31 (26), you must rewrite this DSCP value to 0 before sending the packet to Microsoft. Microsoft only sends packets marked with the DSCP value shown in the above table. 
+* You can decide the queuing mechanism, congestion detection policy, and bandwidth allocation per traffic class. But, the DSCP marking for Skype for Business workloads must be preserved. 
+* If you are using DSCP markings not listed above, e.g. AF31 (26), you must rewrite this DSCP value to 0 before sending the packet to Microsoft. Microsoft only sends packets marked with the DSCP value shown in the above table. 
 
 ## Next steps
 * Refer to the requirements for [Routing](expressroute-routing.md) and [NAT](expressroute-nat.md).