I thought so, but I didn't enter them and they appeared which was confusing. I still can't figure out where the link might have been in the epub metadata. I guessed that it formatted the link based on some line, href?, in the epub file.
Anyways I'll try to set up something to format the author name into a link then put it back into calibre, should be simple enough to add the website url to the username. It would be nice if there was a way to set a rule for building the link from the author name...
Based on this post it should be possible to edit the db directly to bulk edit author's link...
https://www.mobileread.com/forums/sh...d.php?t=336056
Or by using the api somehow
https://www.mobileread.com/forums/sh...d.php?t=353946