CC185416: Fixing Typo

Localization team has reported source content issue that causes localized version to have broken/different format compared to en-us version.
Description: "IOT" should be "IoT"
Affected Line: 34

Author: V-vafune

articles/iot-hub/quickstart-send-telemetry-c.md

@@ -31,7 +31,7 @@ If you don’t have an Azure subscription, create a [free account](https://azure
 
 * Install [Visual Studio 2019](https://www.visualstudio.com/vs/) with the ['Desktop development with C++'](https://www.visualstudio.com/vs/support/selecting-workloads-visual-studio-2017/) workload enabled.
 * Install the latest version of [Git](https://git-scm.com/download/).
-* Run the following command to add the Microsoft Azure IoT Extension for Azure CLI to your Cloud Shell instance. The IOT Extension adds IoT Hub, IoT Edge, and IoT Device Provisioning Service (DPS) specific commands to Azure CLI.
+* Run the following command to add the Microsoft Azure IoT Extension for Azure CLI to your Cloud Shell instance. The IoT Extension adds IoT Hub, IoT Edge, and IoT Device Provisioning Service (DPS) specific commands to Azure CLI.
 
    ```azurecli-interactive
    az extension add --name azure-cli-iot-ext
@@ -200,4 +200,4 @@ In this quickstart, you set up an IoT hub, registered a device, sent simulated t
 To learn more about developing with the Azure IoT Hub C SDK, continue to the following How-to guide:
 
 > [!div class="nextstepaction"]
-> [Develop using Azure IoT Hub C SDK](iot-hub-devguide-develop-for-constrained-devices.md)
+> [Develop using Azure IoT Hub C SDK](iot-hub-devguide-develop-for-constrained-devices.md)