C:\Program
Files\wkhtmltopdf\bin>wkhtmltopdf.exe --page-width 188mm --page-height
2900mm -L 0 -R 0 "src.html" target.pdf
You can change the page length e.g. in the above code. it will not be cut like that, you can customize the table by inline styling to give it an outer border-style like in the below image. I have a long PDF and I've increased too much of that single page you can adjust the height accordingly.
You can see more help on this link.