Update Set-DistributionGroup.md

Author: chrisda

exchange/exchange-ps/exchange/Set-DistributionGroup.md

@@ -1003,13 +1003,11 @@ Accept wildcard characters: False
 ### -HiddenGroupMembershipEnabled
 This parameter is available only in the cloud-based service.
 
-This parameter is reserved for internal Microsoft use.
-
 The HiddenGroupMembershipEnabled switch specifies whether to hide the members of the distribution group from users who aren't members of the group. You don't need to specify a value with this switch.
 
 You can use this setting to help comply with regulations that require you to hide group membership from members or outsiders (for example, a distribution group that represents students enrolled in a class).
 
-Note: If you hide the membership of the group with this parameter, you can't edit the group later to reveal the membership to the group.
+**Note**: If you hide the membership of the group with this parameter, you can't edit the group later to reveal the membership to the group.
 
 ```yaml
 Type: SwitchParameter