loongson/pypi: links for sphinxcontrib-lean

loongson/mirror sphinxcontrib-lean-0.3.1.tar.gz
loongson/mirror sphinxcontrib_lean-0.3.1-py2.py3-none-any.whl
loongson/mirror sphinxcontrib-lean-0.3.0.tar.gz
loongson/mirror sphinxcontrib_lean-0.3.0-py2.py3-none-any.whl
loongson/mirror sphinxcontrib-lean-0.2.0.tar.gz
loongson/mirror sphinxcontrib_lean-0.2.0-py2.py3-none-any.whl