update changelog

Author: ejarvi

src/ResourceManager/Compute/Commands.Compute/ChangeLog.md

@@ -20,7 +20,7 @@
 -->
 ## Current Release
 * Added an example of the `SimpleParameterSet` to New-AzureRmVmss cmdlet help.
-
+* Fixed a typo in the Azure Disk Encryption progress message
 
 ## Version 5.6.0
 * Move dependencies on Keyvault and Storage to the common dependencies