Update exchange.md

Fixed typo on Get/Set-UserBriefingConfig

Author: chrisda

exchange/exchange-ps/exchange/exchange.md

@@ -2029,9 +2029,9 @@ Exchange PowerShell is built on Windows PowerShell technology and provides a pow
 
 ### [Get-EXORecipientPermission](Get-EXORecipientPermission.md)
 
-### Get-UserBriefingConfig](Get-UserBriefingConfig.md)
+### [Get-UserBriefingConfig](Get-UserBriefingConfig.md)
 
-### Set-UserBriefingConfig](Set-UserBriefingConfig.md)
+### [Set-UserBriefingConfig](Set-UserBriefingConfig.md)
 
 ## reporting Cmdlets
 ### [Get-ConnectionByClientTypeDetailReport](Get-ConnectionByClientTypeDetailReport.md)