title: Replace quotes after double quotes in string
body: <p>I have following string:</p>
  
  <pre><code>&lt;something=""Some" random string"  somethingelse="Another "random" string"&gt;
  </code></pre>
  
  <p>I need to change it to this</p>
  
  <pre><code>&lt;something="&amp;quot;Some&amp;quot; random string"  somethingelse="Another &amp;quot;random&amp;quot; string"&gt;
  </code></pre>
  
  <p>Basically leaving the 'outer' quotes and changing the quotes inside them to <code>&amp;quot;</code></p>
  
  <p>I thought some regex might be used to do this, but I'm not sure what the logic should be. Any idea?</p>