Update storage change log (Azure#19705)

Author: blueww

src/Storage/Storage.Management/ChangeLog.md

@@ -18,8 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
-* Replaced "Microsoft.Azure.Management.Storage" SDK reference to the generated SDK code
-* Migrated some Azure File dataplane cmdlets from v11 SDK to v12 SDK
+* Migrated following Azure File dataplane cmdlets from 'Microsoft.Azure.Storage.File 11.2.2' to 'Azure.Storage.Files.Shares 12.10.0'
     -  `Get-AzStorageFile`
     -  `Get-AzStorageFileCopyState`
     -  `Get-AzStorageShare`
@@ -37,7 +36,7 @@
     -  `Set-AzStorageShareStoredAccessPolicy`
     -  `Start-AzStorageFileCopy`
     -  `Stop-AzStorageFileCopy`
-* Migrated Get/List blob to always using v12 SDK
+* Migrated Get/List blob to always use 'Azure.Storage.Blobs'
     -  `Get-AzStorageBlob`
 
 ## Version 4.9.0