title: Ant Design add text only menu items
body: <p>I want to add a simple text item to my <a href="https://ant.design/components/menu/" rel="nofollow noreferrer">Ant Design Menu</a>, something like:</p>
  
  <pre><code>&lt;Menu&gt;
    &lt;Menu.Item key={to} style={style}&gt;&lt;a href="/page1"&gt; Page 1&lt;/a&gt;&lt;/Menu.Item&gt;
    &lt;Menu.Item key={to} style={style}&gt;&lt;a href="/page2"&gt; Page 2&lt;/a&gt;&lt;/Menu.Item&gt;
    &lt;span&gt;Non clickable text&lt;/span&gt;
  &lt;/Menu&gt;
  </code></pre>
  
  <p>This displays fine but it gives me a ton of errors in the console:</p>
  
  <blockquote>
    <p>index.js:2178 Warning: React does not recognize the <code>subMenuKey</code> prop
    on a DOM element. If you intentionally want it to appear in the DOM as
    a custom attribute, spell it as lowercase <code>submenukey</code> instead. If you
    accidentally passed it from a parent component, remove it from the DOM
    element.</p>
  </blockquote>
  
  <p>Does anybody have a way around this ? I really like that Menu component so don't feel like rewriting my own.</p>