title: Regex replace more than one string in Vim
body: <p>I have documents with groups of <code>&lt;hr/&gt;</code> tags:</p>
  
  <pre><code>&lt;p&gt;stuff&lt;/p&gt;
  &lt;hr/&gt;
  &lt;hr/&gt;
  &lt;hr/&gt;
  &lt;p&gt;stuff&lt;/p&gt;
  </code></pre>
  
  <p>Grateful for tip how to replace with a single instance of this tag in Vim.</p>