Merge pull request #12804 from akash-bhargava/docs-editor/Get-EXOMailbox-1750181961

Update Get-EXOMailbox.md

Author: chrisda

exchange/exchange-ps/exchange/Get-EXOMailbox.md

@@ -447,7 +447,6 @@ The RecipientTypeDetails parameter filters the results by the specified mailbox
 
 - DiscoveryMailbox
 - EquipmentMailbox
-- GroupMailbox
 - LegacyMailbox
 - LinkedMailbox
 - LinkedRoomMailbox