It looks as if you’ve changed the text in the p element.
But the instructions just asked you to add the comment line, not to make any other changes.
You’ll probably need to reset the step so that you get back to the original p element text. (You might need to submit your code a few times until you see the “reset this step” option below the submit button).
Then just add your comment, with no other changes, and your code should pass.