title: Multi-line description of a parameter description in python docstring
body: <p>So, reStructuredText is
  <a href="https://www.python.org/dev/peps/pep-0287" rel="noreferrer">the recommended way</a> for Python code
  documentation, if you try hard enough, you can
  <a href="http://www.sphinx-doc.org/en/master/usage/restructuredtext/domains.html#python-signatures" rel="noreferrer">find in the sphinx documentation</a>
  how to normalize your function signature documentation. All given examples are
  single-line, but what if a parameter description is multi-line like the following
  ?</p>
  
  <pre><code>def f(a, b):
      """ Does something with a and b
  
      :param a: something simple
      :param b: well, it's not something simple, so it may require more than eighty
                chars
      """
  </code></pre>
  
  <p>What is the syntax/convention for that ? Should I indent or not ? will it break reSTructuredText rendering ?</p>