Update the example inserting a missing parameter

Provided example works only for OS disk. If you try to mount a data disk with this configuration, the operation fail. With setting inserted in example the problem is solved. The solution it was an outcome of an analysis done with Product Group

Author: simonesavi

src/Compute/Compute/help/Set-AzDiskKeyEncryptionKey.md

@@ -31,6 +31,7 @@ PS C:\> $keyUrl = https://myvault.vault-int.azure-int.net/keys/456;
 PS C:\> $keyId = '/subscriptions/0000000-0000-0000-0000-000000000000/resourceGroups/ResourceGroup01/providers/Microsoft.KeyVault/vaults/TestVault456';
 PS C:\> $diskconfig = Set-AzDiskDiskEncryptionKey -Disk $diskconfig -SecretUrl $secretUrl -SourceVaultId $secretId;
 PS C:\> $diskconfig = Set-AzDiskKeyEncryptionKey -Disk $diskconfig -KeyUrl $keyUrl -SourceVaultId $keyId;
+PS C:\> $diskconfig.EncryptionSettingsCollection.EncryptionSettingsVersion = '1.1';
 PS C:\> New-AzDisk -ResourceGroupName 'ResourceGroup01' -DiskName 'Disk01' -Disk $diskconfig;
 ```