I looked it up in the man page, there it specifically states windows7 and windows10 separately, seems they have not updated the man-page but good to know. Cheers!No need for the 10 after windows either.
produces the same ascii artCode:neofetch --ascii_distro windows
P.S About your signature I dislike miners because they are the cause of these extreme prices with graphics cards now days so hopefully you aren't hosting a mining farm.