Make Dapper.Contrib.Tests prompt in the same way as others at the end of the tests

Dapper.Contrib.Tests/Program.cs

@@ -46,6 +46,8 @@ private static void RunTests()
                 method.Invoke(tester, null);
                 Console.WriteLine(" - OK!");
             }
+
+            Console.WriteLine("(end of tests; press any key)");
             Console.ReadKey();
         }