Replace incorrect link about OS upgrade history

The text of the link was describing the OS upgrade history URL, but the like was to the get instances docs page. This PR replaces the link with the correct one

Author: jgscherber

articles/virtual-machine-scale-sets/virtual-machine-scale-sets-automatic-upgrade.md

@@ -446,7 +446,7 @@ az vmss rolling-upgrade start --resource-group "myResourceGroup" --name "myScale
 
 ## Investigate and Resolve Auto Upgrade Errors
 
-The platform can return errors on VMs while performing Automatic Image Upgrade with Rolling Upgrade policy. The [Get Instance View](/rest/api/compute/virtual-machine-scale-sets/get-instance-view) of a VM contains the detailed error message to investigate and resolve an error. The [Rolling Upgrades - Get Latest](/rest/api/compute/virtual-machine-scale-sets/get) can provide more details on rolling upgrade configuration and status. The [Get OS Upgrade History](/rest/api/compute/virtual-machine-scale-sets/get) provides details on the last image upgrade operation on the scale set. Below are the topmost errors that can result in Rolling Upgrades.
+The platform can return errors on VMs while performing Automatic Image Upgrade with Rolling Upgrade policy. The [Get Instance View](/rest/api/compute/virtual-machine-scale-sets/get-instance-view) of a VM contains the detailed error message to investigate and resolve an error. The [Rolling Upgrades - Get Latest](/rest/api/compute/virtual-machine-scale-sets/get) can provide more details on rolling upgrade configuration and status. The [Get OS Upgrade History](/rest/api/compute/virtual-machine-scale-sets/get-os-upgrade-history) provides details on the last image upgrade operation on the scale set. Below are the topmost errors that can result in Rolling Upgrades.
 
 **RollingUpgradeInProgressWithFailedUpgradedVMs**
 - Error is triggered for a VM failure.