fix link

Author: v-thepet

articles/iot-hub-device-update/device-update-plug-and-play.md

@@ -90,7 +90,7 @@ The **deviceProperties** field contains the manufacturer and model information f
 |model|string|device to cloud|The device model of the device, reported through `deviceProperties`. The `DeviceUpdateCore` interface first attempts to read the `aduc_model` value from the [configuration file](device-update-configuration-file.md). If the value isn't populated in the configuration file, the interface defaults to reporting the compile-time definition for `ADUC_DEVICEPROPERTIES_MODEL`. This property is reported only at boot time. <br> Default value: 'Video'|
 |contractModelId|string|device to cloud|Property the service uses to identify the base model version the Device Update agent is using to manage and communicate with the agent.<br>Value: `dtmi:azure:iot:deviceUpdateContractModel;3` for devices using Device Update agent version 1.1.0. <br>**Note:** Agents using `dtmi:azure:iot:deviceUpdateModel;2` must report the `contractModelId` as `dtmi:azure:iot:deviceUpdateContractModel;3`, because `deviceUpdateModel;3` is extended from `deviceUpdateContractModel;3`.|
 |aduVer|string|device to cloud|Version of the Device Update agent running on the device. This value is read from the build only if `ENABLE_ADU_TELEMETRY_REPORTING` is set to `1` (true) during compile time. You can choose to opt out of version reporting by setting the value to `0` (false). For more information, see [How To Build the Device Update Agent](https://github.com/Azure/iot-hub-device-update/blob/main/docs/agent-reference/how-to-build-agent-code.md).|
-|doVer|string|device to cloud|Version of the Delivery Optimization agent running on the device. The value is read from the build only if `ENABLE_ADU_TELEMETRY_REPORTING` is set to `1` (true) during compile time. You can choose to opt out of version reporting by setting the value to `0` (false). For more information, see [How To Build the Device Update Agent](https://github.com/Azure/iot-hub-device-update/blob/main/docs/agent-reference/how-to-build-agent-code.md).|
+|doVer|string|device to cloud|Version of the Delivery Optimization agent running on the device. The value is read from the build only if `ENABLE_ADU_TELEMETRY_REPORTING` is set to `1` (true) during compile time. You can choose to opt out of version reporting by setting the value to `0` (false). For more information, see [How to customize Delivery Optimization agent properties](https://github.com/microsoft/do-client/blob/main/README.md#building-do-client-components).|
 |Custom compatibility properties|User-defined|device to cloud|Other user-defined device properties to use for the compatibility check when targeting the update deployment.|
 
 #### State