transformation_report pdf output text overflows page on the right side

[verajosemanuel]

when calling transformation_report() if the amount of variables with NAs is sufficient, the text overflows the pdf page.
just added a buch of NAs and a couple of variables to show this:

maybe the best way is to show a list of variables with a carriage return per variable so every line has a variable and the page limit is not bothering anymore.

[choonghyunryu]

@verajosemanuel

Thanks for the issue reports and suggestions. I'll share a version that fixes the problem soon.