Fixes #11300 - Example works with multiple subnets (#11600)

Author: mikefrobbins

src/Network/Network/help/New-AzPrivateLinkService.md

@@ -26,16 +26,19 @@ The **New-AzPrivateLinkService** cmdlet creates a private link service
 ## EXAMPLES
 
 ### Example 1
-```
-$vnet = Get-AzVirtualNetwork -ResourceName "myvnet" -ResourceGroupName "myresourcegroup"
-$IPConfig = New-AzPrivateLinkServiceIpConfig -Name "IP-Config" -Subnet $vnet.subnets[1] -PrivateIpAddress "10.0.0.5"
-$publicip = Get-AzPublicIpAddress -ResourceGroupName "myresourcegroup"
-$frontend = New-AzLoadBalancerFrontendIpConfig -Name "FrontendIpConfig01" -PublicIpAddress $publicip
-$lb = New-AzLoadBalancer -Name "MyLoadBalancer" -ResourceGroupName "myresourcegroup" -Location "West US" -FrontendIpConfiguration $frontend  
-New-AzPrivateLinkService -Name "mypls" -ResourceGroupName myresourcegroup -Location "West US" -LoadBalancerFrontendIpConfiguration $frontend -IpConfiguration $IPConfig
-```
 
-This example creates a private link service.
+The following example creates a private link service.
+
+```powershell
+$vnet = Get-AzVirtualNetwork -ResourceName 'myvnet' -ResourceGroupName 'myresourcegroup'
+# View the results of $vnet and change 'mysubnet' in the following line to the appropriate subnet name.
+$subnet = $vnet | Select-Object -ExpandProperty subnets | Where-Object Name -eq 'mysubnet'
+$IPConfig = New-AzPrivateLinkServiceIpConfig -Name 'IP-Config' -Subnet $subnet -PrivateIpAddress '10.0.0.5'
+$publicip = Get-AzPublicIpAddress -ResourceGroupName 'myresourcegroup'
+$frontend = New-AzLoadBalancerFrontendIpConfig -Name 'FrontendIpConfig01' -PublicIpAddress $publicip
+$lb = New-AzLoadBalancer -Name 'MyLoadBalancer' -ResourceGroupName 'myresourcegroup' -Location 'West US' -FrontendIpConfiguration $frontend
+New-AzPrivateLinkService -Name 'mypls' -ResourceGroupName myresourcegroup -Location "West US" -LoadBalancerFrontendIpConfiguration $frontend -IpConfiguration $IPConfig
+```
 
 ## PARAMETERS