spins.fp.o: Change the LXQt project URL
    
    LXQt project recently moved their domain from lxqt.org to
    lxqt.github.io and now to lxqt-project.org (hosted on lxqt.github.io).
    So changing the URL to reflect their current domain.
    
    Signed-off-by: Zamir SUN <sztsian@gmail.com>