title: Stylelint disable rule, "no-descending-specificity" null does not work
body: <p>Not able to disable the styelint rule &quot;no-descending-specificity&quot; by assigning <strong>null</strong> value within the  stylelintric.json file</p>
  <pre><code>&quot;rules&quot;: {
      &quot;no-descending-specificity&quot;: null
   }
  </code></pre>
  <p>Instead I had to write the below line to the top of my scss file</p>
  <pre><code>/* stylelint-disable no-descending-specificity */
  </code></pre>
  <p>Stylint <a href="https://stylelint.io/user-guide/configure/#rules" rel="nofollow noreferrer">doc</a> however allows usage of <strong>null</strong> to turn off any rule. What could be wrong here?</p>
  <p>My eslint version is 4.19.1.</p>