typo

Dapper/SqlMapper.cs

@@ -1217,9 +1217,9 @@ private static IDbCommand SetupCommand(IDbConnection cnn, IDbTransaction transac
         }
 
 
-        private static int ExecuteCommand(IDbConnection cnn, IDbTransaction tranaction, string sql, Action<IDbCommand, object> paramReader, object obj, int? commandTimeout, CommandType? commandType)
+        private static int ExecuteCommand(IDbConnection cnn, IDbTransaction transaction, string sql, Action<IDbCommand, object> paramReader, object obj, int? commandTimeout, CommandType? commandType)
         {
-            using (var cmd = SetupCommand(cnn, tranaction, sql, paramReader, obj, commandTimeout, commandType))
+            using (var cmd = SetupCommand(cnn, transaction, sql, paramReader, obj, commandTimeout, commandType))
             {
                 return cmd.ExecuteNonQuery();
             }