Merge pull request #13812 from wickste/patch-1

Updating link for C SDKs (device and service)

Author: ktoliver

articles/iot-hub/iot-hub-devguide-sdks.md

@@ -139,7 +139,7 @@ Other reference topics in this IoT Hub developer guide include:
 [lnk-npm-service]: https://www.npmjs.com/package/azure-iothub
 [lnk-nuget-csharp-device]: https://www.nuget.org/packages/Microsoft.Azure.Devices.Client/
 [lnk-nuget-csharp-service]: https://www.nuget.org/packages/Microsoft.Azure.Devices/
-[lnk-c-package]: https://github.com/Azure/azure-iot-sdk-c/blob/master/iothub_client/readme.md
+[lnk-c-package]: https://github.com/Azure/azure-iot-sdk-c/blob/master/readme.md
 [lnk-pip-device]: https://pypi.python.org/pypi/azure-iothub-device-client/
 [lnk-pip-service]: https://pypi.python.org/pypi/azure-iothub-service-client/
 
@@ -151,4 +151,4 @@ Other reference topics in this IoT Hub developer guide include:
 [lnk-benefits-blog]: https://azure.microsoft.com/blog/benefits-of-using-the-azure-iot-sdks-in-your-azure-iot-solution/
 [lnk-cocoa-device]: https://cocoapods.org/pods/AzureIoTHubClient
 [lnk-ios-sample]: https://github.com/Azure-Samples/azure-iot-samples-ios
-[lnk-cocoa-service]: https://cocoapods.org/pods/AzureIoTHubServiceClient
+[lnk-cocoa-service]: https://cocoapods.org/pods/AzureIoTHubServiceClient