(Azure CXP) Fixing incorrect file name reference

Fixing incorrect file name reference
Resolves : https://github.com/MicrosoftDocs/azure-docs/issues/95735

Author: AshokPeddakotla-MSFT

articles/iot-hub-device-update/device-update-agent-provisioning.md

@@ -105,7 +105,7 @@ Follow these instructions to provision the Device Update agent on [IoT Edge enab
         sudo apt-get install deviceupdate-agent deliveryoptimization-plugin-apt
         ```
 
-    - For any 'rc' i.e. release candidate agent versions from [Artifacts](https://github.com/Azure/iot-hub-device-update/releases) : Download the .dep file to the machine you want to install the Device Update agent on, then:
+    - For any 'rc' i.e. release candidate agent versions from [Artifacts](https://github.com/Azure/iot-hub-device-update/releases) : Download the .deb file to the machine you want to install the Device Update agent on, then:
 
         ```shell
         sudo apt-get install -y ./"<PATH TO FILE>"/"<.DEB FILE NAME>"