Update Set-AzLoadBalancerInboundNatPoolConfig.md (#13068)

Added PS C:\> $slb | Set-AzLoadBalancer to set LB under example one

src/Network/Network/help/Set-AzLoadBalancerInboundNatPoolConfig.md

@@ -40,6 +40,7 @@ The **Set-AzLoadBalancerInboundNatPoolConfig** cmdlet sets an inbound NAT pool c
 PS C:\> $slb = Get-AzLoadBalancer -Name "MyLoadBalancer" -ResourceGroupName "MyResourceGroup"
 PS C:\> $feIpConfig = Get-AzLoadBalancerFrontendIpConfig -Name "FrontendName" -LoadBalancer $slb
 PS C:\> Set-AzLoadBalancerInboundNatPoolConfig -Name "myInboundNatPool" -LoadBalancer $slb -FrontendIpConfigurationId $inboundNatPoolConfig.FrontendIPConfiguration -Protocol TCP -FrontendPortRangeStart 2001 -FrontendPortRangeEnd 3000 -BackendPort 2001
+PS C:\> $slb | Set-AzLoadBalancer
 ```
 
 ## PARAMETERS