title: sphinx import parent dir rst file?
body: <p>I need to create one sphinx project for each module, </p>
  
  <p>and each module share some common rsts, like company info, license, etc. </p>
  
  <p>My project tree is like this:</p>
  
  <pre><code>./conf.py
  ./index.rst
  ./intro.rst
  ./about.rst
  
  ./device1/conf.py
  ./device1/index.rst 
  </code></pre>
  
  <p>I write this in ./device1/index.rst, and it is not worked, how could I import parent rst files?</p>
  
  <pre><code>.. toctree::
     :maxdepth: 1
  
     ../intro
     ../about
  </code></pre>