code: def clean_readme(fname):
      
      with codecs.open(fname, 'r', 'utf-8') as f:
          return ''.join(
              re.sub(r':\w+:`([^`]+?)( <[^<>]+>)?`', r'``\1``', line)
              for line in f
              if not (line.startswith('.. currentmodule') or line.startswith('.. toctree'))
          )
docs: Cleanup README.rst for proper PyPI formatting.