title: How to insert blank line using reStructuredText / Sphinx
body: <p>I want to add a blankline (or add more whitespace) between heading and the image using ReStructuredText:</p>
  
  <pre><code>====
  John 
  ====
  
  .. image:: _static/john.JPG
     :alt: John
     :height: 300px
     :width: 400px
  </code></pre>
  
  <p>But I don't know how to do it?</p>