title: Replace string inside tags?
body: <p>I want to replace a content inside some tags, eg:</p>
  
  <pre><code>&lt;p&gt;this it to be replaced&lt;/p&gt;
  </code></pre>
  
  <p>I could extract the content between with groups like this, but can i actually replace the group?</p>
  
  <pre><code>str = str.replaceAll("&lt;p&gt;([^&lt;]*)&lt;/p&gt;", "replacement");
  </code></pre>