FAQ's table of contents has broken link

[moisseev]

https://rspamd.com/doc/faq.html

      <li><a href="#what-are-enable_password-and-password-for-webui">What are <code>enable_password</code> and <code>password</code> for WebUI</a></li>

That link doesn't work because of missed underscore in bookmark:

<h3 id="what-are-enablepassword-and-password-for-webui">What are <code>enable_password</code> and <code>password</code> for WebUI</h3>