CNV-BZ-1904228 Added prereq of powering down VM to procedure

Author: Shikha Jhala

virt/virtual_machines/advanced_vm_management/virt-dedicated-resources-vm.adoc

@@ -5,16 +5,14 @@ include::modules/virt-document-attributes.adoc[]
 
 toc::[]
 
-Virtual machines can have resources of a node, such as CPU,
-dedicated to them in order to improve performance.
+To improve performance, you can dedicate node resources, such as CPU, to a virtual machine.
 
 include::modules/virt-about-dedicated-resources.adoc[leveloffset=+1]
 
 == Prerequisites
 
-* The
-xref:../../../scalability_and_performance/using-cpu-manager.adoc[CPU Manager]  must
-be configured on the node. Verify that the node has the `cpumanager` = `true`
-label before scheduling virtual machine workloads.
+* The xref:../../../scalability_and_performance/using-cpu-manager.adoc[CPU Manager]  must be configured on the node. Verify that the node has the `cpumanager = true` label before scheduling virtual machine workloads.
+
+* The virtual machine must be powered off.
 
 include::modules/virt-enabling-dedicated-resources.adoc[leveloffset=+1]