doc(XCP-ng): Explain how to apply Viridian enlightenments to Windows VM templates

Signed-off-by: Thomas Moraine <[email protected]>

Author: thomas-dkmt

docs/vms/vms.md

@@ -74,7 +74,15 @@ Certain applications, such as Oracle ASM, require a unique identifier for disk d
 
 Viridian is a codename for [Hyper-V](https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/hyper-v-overview), a native hypervisor developed by Microsoft that allows the creation of virtual machines on x86-64 systems running Windows.
 
-Viridian extensions —referred to as "Viridian enlightenments" by Microsoft— are used by any "recent" Windows OS to work properly. Make sure they are enabled for your VM. To know more, read the VM Templates section of the [Xen Orchestra documentation](https://docs.xen-orchestra.com/vm-templates). 
+Viridian extensions —referred to as "Viridian enlightenments" by Microsoft— are used by any "recent" Windows OS to work properly. Make sure they are enabled for your VM. 
+
+:::tip
+
+Viridian enlightenments are enabled by default on Windows VM templates included with XCP-ng. 
+
+To enable Viridian enlightenments to other Windows VM templates, you need to enable them manually. To do this, run  `xe vm-param-set uuid=<vm uuid> platform:viridian=true`.
+
+:::
 
 ### Manage screen resolution