title: PEP257 - D212, and D213 conflicts?
body: <p>I'm trying to use prospector on my docstrings on top of python files.</p>
  
  <p>Here is an example of my docstring:</p>
  
  <pre><code>"""item_exporters.py contains Scrapy item exporters.
  
  Once you have scraped your items, you often want to persist or export those items, to use the data in some other
  application. That is, after all, the whole purpose of the scraping process.
  
  For this purpose Scrapy provides a collection of Item Exporters for different output formats, such as XML, CSV or JSON.
  
  More Info:
      https://doc.scrapy.org/en/latest/topics/exporters.html
  
  """
  </code></pre>
  
  <p>It has an issue of: </p>
  
  <pre><code>pep257: D213 / Multi-line docstring summary should start at the second line
  </code></pre>
  
  <p>Therefore I move the first line down, and it would start at the second line:</p>
  
  <pre><code>"""
  item_exporters.py contains Scrapy item exporters.
  
  Once you have scraped your items, you often want to persist or export those items, to use the data in some other
  application. That is, after all, the whole purpose of the scraping process.
  
  For this purpose Scrapy provides a collection of Item Exporters for different output formats, such as XML, CSV or JSON.
  
  More Info:
      https://doc.scrapy.org/en/latest/topics/exporters.html
  
  """
  </code></pre>
  
  <p>Then if I ran prospector again, I would get D212 as an error.</p>
  
  <pre><code>pep257: D212 / Multi-line docstring summary should start at the first line
  </code></pre>
  
  <p>Is there something wrong with D212 and D213?</p>