Revise VM Insights setup instructions

Updated instructions for enabling VM Insights and clarified onboarding process.

Author: staleycyn

Instructions/Labs/LAB_11-Implement_Monitoring.md

@@ -82,9 +82,14 @@ In this task, you will deploy a virtual machine that will be used to test monito
 
 1. Select **Enable** next to your virtual machine.
 
-1. Take the defaults, select **Review + enable**, and then **Enable**.  
+1. Ensure **Open Telemetry Metrics** is **not** checked. 
+
+1. Select **Review + enable**, and then **Enable**.
+
+1. It will take a few minutes for the virtual machine agent to install and onboard.
+
+1. You can proceed to the next task, but continue to monitor the Notifications. If the on-boarding fails, try to enable it again.
 
-1. It will take a few minutes for the virtual machine agent to install and configure, proceed to the next step. 
 
 ## Task 2: Create an alert