Fix Application Gateway IP Config documentation

Fixed incorrect dash character, removed positional parameter in favor of named one

Author: joelmforsyth

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

@@ -420,7 +420,7 @@ Let's say you have a scale set with an Azure Load Balancer, and you want to repl
     $vmss=Get-AzVmss -ResourceGroupName "myResourceGroup" -Name "myScaleSet"
     
     # Create a local PowerShell object for the new desired IP configuration, which includes the reference to the application gateway
-    $ipconf = New-AzVmssIPConfig "myNic" -ApplicationGatewayBackendAddressPoolsId /subscriptions/{subscriptionId}/resourceGroups/myResourceGroup/providers/Microsoft.Network/applicationGateways/{applicationGatewayName}/backendAddressPools/{applicationGatewayBackendAddressPoolName} -SubnetId $vmss.VirtualMachineProfile.NetworkProfile.NetworkInterfaceConfigurations[0].IpConfigurations[0].Subnet.Id –Name $vmss.VirtualMachineProfile.NetworkProfile.NetworkInterfaceConfigurations[0].IpConfigurations[0].Name
+    $ipconf = New-AzVmssIPConfig -ApplicationGatewayBackendAddressPoolsId /subscriptions/{subscriptionId}/resourceGroups/myResourceGroup/providers/Microsoft.Network/applicationGateways/{applicationGatewayName}/backendAddressPools/{applicationGatewayBackendAddressPoolName} -SubnetId $vmss.VirtualMachineProfile.NetworkProfile.NetworkInterfaceConfigurations[0].IpConfigurations[0].Subnet.Id -Name $vmss.VirtualMachineProfile.NetworkProfile.NetworkInterfaceConfigurations[0].IpConfigurations[0].Name
     
     # Replace the existing IP configuration in the local PowerShell object (which contains the references to the current Azure Load Balancer) with the new IP configuration
     $vmss.VirtualMachineProfile.NetworkProfile.NetworkInterfaceConfigurations[0].IpConfigurations[0] = $ipconf