update -SourceFolder section

have same wording as Get-RecoverableItems

Author: mchiro

exchange/exchange-ps/exchange/Restore-RecoverableItems.md

@@ -359,13 +359,12 @@ Accept wildcard characters: False
 
 ### -SourceFolder
 The SourceFolder parameter specifies where to search for deleted items in the mailbox. Valid values are:
-
 - DeletedItems: The Deleted Items folder.
-- DiscoveryHoldsItems: The Recoverable Items\DiscoveryHolds folder. This folder contains items that have been purged from the Recoverable Items folder (hard-deleted items) and are protected by a hold. By default, DiscoveryHolds are excluded from restore, so you must explicitly specify DiscoveryHoldsItems to successfully restore.
 - RecoverableItems: The Recoverable Items\Deletions folder. This folder contains items that have been deleted from the Deleted Items folder (soft-deleted items).
 - PurgedItems: The Recoverable Items\Purges folder. This folder contains items that have been purged from the Recoverable Items folder (hard-deleted items).
 
-If you don't use this parameter, the command will search all of these folders.
+If you don't use this parameter, the command will search these three folders.
+- DiscoveryHoldsItems: The Recoverable Items\DiscoveryHolds folder. This folder contains items that have been purged from the Recoverable Items folder (hard-deleted items) and are protected by a hold. To search for deleted items in this folder, use this parameter with the value DiscoveryHoldsItems.
 
 ```yaml
 Type: RecoverableItemsFolderType