Adding OCE note

Author: get-itips

skype/skype-ps/skype/Set-CsTeamsMessagingPolicy.md

@@ -249,6 +249,7 @@ Accept wildcard characters: False
 
 ### -AllowUrlPreviews
 Use this setting to turn automatic URL previewing on or off in messages. Set this to TRUE to turn on. Set this to FALSE to turn off.
+Note: [Optional Connected Experiences](https://docs.microsoft.com/deployoffice/privacy/manage-privacy-controls#policy-setting-for-optional-connected-experiences) must be also enabled for URL previews to be allowed.
 
 ```yaml
 Type: Boolean