title: I misspelled "use strict" to "use stricr"
body: <p>this code gives error which makes perfectly sense</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;Page Title&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;script&gt;
  usestricr
  &lt;/script&gt;
  &lt;/body&gt;
  &lt;/html&gt;</code></pre>
  </div>
  </div>
  </p>
  <p>but this doesn't why</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;Page Title&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;script&gt;
  "usestricr"
  &lt;/script&gt;
  &lt;/body&gt;
  &lt;/html&gt;</code></pre>
  </div>
  </div>
  </p>
  <p>please help i'am noob in this</p>