Update VMware.VMEncryption.psm1

Example for Get-Help was using $SetVMEncryptionKey rather than SetVMDiskEncryptionKey ($ sign and other command used)

Modules/VMware.VMEncryption/VMware.VMEncryption.psm1

@@ -1034,7 +1034,7 @@ Function Set-VMDiskEncryptionKey {
        C:\PS>$KMSCluster = Get-KMSCluster | select -last 1
        C:\PS>$VM = Get-VM -Name win2012
        C:\PS>$HardDisk = get-vm $vm|Get-HardDisk
-       C:\PS>$HardDisk|$Set-VMEncryptionKey -VM $VM -KMSClusterId $KMSCluster.Id -Deep
+       C:\PS>$HardDisk| Set-VMDiskEncryptionKey -VM $VM -KMSClusterId $KMSCluster.Id -Deep
 
        Deep rekeys all the disks of the $VM  using a new key.
        The key is generted from the KMS whose clusterId is $KMSCluster.Id.