Added relnote for 6.5CU2

Updated table to mention about 6.5 refresh release (6.5cu2) and blogpost

Author: athinanthny

articles/service-fabric/release-notes.md

@@ -58,6 +58,8 @@ For further details, see the [Service Fabric 6.5 Release Notes](https://github.c
 |---|---|---|
 | June 11, 2019 | [Azure Service Fabric 6.5](https://blogs.msdn.microsoft.com/azureservicefabric/2019/06/11/azure-service-fabric-6-5-release/)  | [Release notes](https://github.com/Azure/service-fabric/blob/master/release_notes/Service_Fabric_ReleaseNotes_65.pdf)|
 | July 2, 2019 | [Azure Service Fabric 6.5 Refresh Release](https://blogs.msdn.microsoft.com/azureservicefabric/2019/07/04/azure-service-fabric-6-5-refresh-release/)  | [Release notes](https://github.com/Azure/service-fabric/blob/master/release_notes/Service_Fabric_ReleaseNotes_65CU1.pdf)  |
+| July 29, 2019 | [Azure Service Fabric 6.5 Refresh Release](https://techcommunity.microsoft.com/t5/Azure-Service-Fabric/Azure-Service-Fabric-6-5-Second-Refresh-Release/ba-p/800523)  | [Release notes](https://github.com/Azure/service-fabric/blob/master/release_notes/Service_Fabric_ReleaseNotes_65CU2.pdf)  |
+
 
 ## Previous versions