Add Hyper-V manager method

site/content/en/docs/Reference/Drivers/includes/hyperv_usage.inc

@@ -18,21 +18,29 @@ If Hyper-V was not previously active, you will need to reboot.
 
 Create a Hyper-V external network switch  
 
-{{% alert title="Untested" color="warning" %}}
-This command is speculative, and may not work in all environments. You may need to use the Hyper-V Administrator UI for wireless interfaces.
-{{% /alert %}}
+### Using Hyper-V Manager
+
+1. Open the Hyper-V Manager. (On Windows 10, search for the Hyper-V Manager in the lower left search field.)
+2. Select the Virtual Switch Manager on the right-hand Actions panel.
+3. Set up a new external network switch to use, named `ExternalSwitch`
+  * If you already have another network switch set up, use that one instead but make sure it is an external switch.
+
+### Using PowerShell
+
+**NOTE: This command is speculative, and may not work in all environments. You may need to use the Hyper-V Administrator UI for wireless interfaces.**
 
 ```powershell
 New-VMSwitch -name ExternalSwitch -NetAdapterName Ethernet -AllowManagementOS $true
 ```
 
-Set this switch as the minikube default:
+## Usage
+
+Set the switch you created as the minikube default:
 
 ```shell
 minikube config set hyperv-virtual-switch ExternalSwitch
 ```
 
-## Usage
 
 ```shell
 minikube start --vm-driver=hyperv