root/pypi: links for ninchanese-leaderboard

root/pypi ninchanese-leaderboard-3.7.4.tar.gz
root/pypi ninchanese_leaderboard-3.7.4-py3-none-any.whl
root/pypi ninchanese-leaderboard-3.7.3.tar.gz
root/pypi ninchanese_leaderboard-3.7.3-py3-none-any.whl