I got stuck either and I cannot figured out why, as I followed all steps. In my situation it seems that I dont tip the text.
"Commenting allows you to leave messages without affecting the browser display. It also allows you to make code inactive. A comment in HTML starts with <!--, contains any number of lines of text, and ends with -->. For example, the comment <!-- TODO: Remove h1 --> contains the text TODO: Remove h1.
Add a comment above the p element with this text:
TODO: Add link to cat photos "
<p>Click here to view more cat photos.</p>
<!--TODO:Add link to cat photos-->