No. The file browser opens and in the bottom right there is a drop-down box
which says HTML and if I save the file it is an HTML file. With other
people's links the drop-down box in the file browser says PDF and when I
download the file it is a PDF file not an HTML file.
If you right click and choose "inspect element" your links are inside list
tags and while SuperTramp's links for example are in paragraph tags
I'm not sure why that would make a difference. Did you paste a list of links
from somewhere rather than paste them one-by-one?