Merge pull request MicrosoftDocs#8575 from MicrosoftDocs/chrisda

Update New-RetentionCompliancePolicy.md

Author: chrisda

exchange/exchange-ps/exchange/New-RetentionCompliancePolicy.md

@@ -375,7 +375,7 @@ Accept wildcard characters: False
 ```
 
 ### -RetainCloudAttachment
-{{ Fill RetainCloudAttachment Description }}
+This parameter is reserved for internal Microsoft use.
 
 ```yaml
 Type: Boolean