I can't understand please help

Tell us what’s happening:
Describe your issue in detail here.

  **Your code so far**
<html>
<body>
  <h1>CatPhotoApp</h1>
  
  
  <main>
  <h2>Cat Photos</h2>
    <ul>
      <li> Child Element 1 </li>
      <li> Child Element 2 </li>
    <ul/>
  <!-- TODO: Add link to cat photos -->
  <p>Click here to view more cat photos.</p>
  </main>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36

Challenge: Step 6

Link to the challenge:

You do not want to add any new elements to the HTML. The example code in the instructions is just that, an example, and should not be used in your answer. I think you need to restart the step to get the original formatting back as formatting is very important for this step. The only thing you want to do is add two more spaces before the opening tag for each of the three child elements in main. Do not make any other changes.