Square inside radio input (instead of circle)

Hi All thanks for your great work.
I'm in trouble with radio input, they are checked with square instead of circle, i tried with jsoup and without. I've made a little test project [here](https://github.com/paolopiccinini/openhtmltopdf-example). In the resource folder you will find the two html one for jsoup in.html and in2.htm without jsoup (same result).
I will attach the result
[out.pdf](https://github.com/danfickle/openhtmltopdf/files/9046975/out.pdf)
someone can help plese? is there a way to put a circle inside the radio input?