loongson/pypi: links for doc2text

loongson/mirror doc2text-0.2.4.tar.gz
loongson/mirror doc2text-0.2.3.tar.gz
loongson/mirror doc2text-0.2.2.tar.gz
loongson/mirror doc2text-0.2.0.tar.gz
loongson/mirror doc2text-0.1.0.tar.gz