docs: Fix README for PyPI rendering
docs: Fix README for PyPI rendering

Signed-off-by: Sumana Harihareswara <16795633e2c1543064a3ad70ac3ba71d3d589b3b@changeset.nyc>

sbidoul/pip,pradyunsg/pip,pradyunsg/pip,pfmoore/pip,pfmoore/pip,pypa/pip,sbidoul/pip,pypa/pip