Update troubleshoot-defender-micro-agent.md

Change ps command

Author: wilkovandevelde

articles/defender-for-iot/device-builders/troubleshoot-defender-micro-agent.md

@@ -36,7 +36,7 @@ You will know that the service is crashing if, the process uptime is less than 2
 Use the following command to verify that the Defender for IoT micro agent service is running with root privileges.
 
 ```bash
-ps -aux | grep " defender-iot-micro-agent"
+ps -aux | grep "defender_iot_micro_agent"
 ```
 The following sample result shows that the folder 'defender_iot_micro_agent' has root privileges due to the word 'root' appearing as shown by the red box.