fix trading212 record test

internal/trading212/record_test.go

@@ -175,7 +175,7 @@ func TestRecordReader_ReadRecord_Split(t *testing.T) {
 		if got.Kind() != internal.KindSplit {
 			t.Errorf("want kind %v but got %v", internal.KindSplit, got.Kind())
 		}
-		if got.Symbol() != "NO0013536151" {
+		if got.Symbol() != "XX1234567890" {
 			t.Errorf("want symbol NO0013536151 but got %v", got.Symbol())
 		}