Update sdk-options.md

Author: tomaschladek

articles/communication-services/concepts/sdk-options.md

@@ -87,7 +87,7 @@ The Calling package supports UWP apps build with .NET Native or C++/WinRT on:
 
 ## REST APIs
 
-Communication Services APIs are documented alongside other [Azure REST APIs in docs.microsoft.com](/rest/api/azure/). This documentation will tell you how to structure your HTTP messages and offers guidance for using [Postman](../tutorials/postman-tutorial.md). REST interface documentation is also published in Swagger format on [GitHub](https://github.com/Azure/azure-rest-api-specs).
+Communication Services APIs are documented alongside other [Azure REST APIs in docs.microsoft.com](/rest/api/azure/). This documentation will tell you how to structure your HTTP messages and offers guidance for using [Postman](../tutorials/postman-tutorial.md). REST interface documentation is also published in Swagger format on [GitHub](https://github.com/Azure/azure-rest-api-specs). You can find throttling limits for individual APIs on [service limits page](./service-limits.md).
 
 ### REST API Throttles