added a option whether packing list parameters round brackets.

When I develop database query with Dapper,
at first I write SQL statement on SSMS(SQL Server Management Stduio) 
ane next I add SQL statement to C# code.

But In clause  indication of Dapper " where Id in @Ids" is syntax error on SSMS.
I want to write  " where Id in ( @Ids )" .