Some info missing on Drupal 7 ckeditor accordion instructions Trying go to get this working:

https://www.drupal.org/project/ckeditor_accordion

But it's not working, step 5 and 6 don't exist or I can't find them in Drupal 7, are these instructions for Drupal 8 only?

 5.Scroll down to the bottom to the input Allowed HTML tags
 6.Find and replace &lt;dl&gt; with &lt;dl class&gt;


Can't find 5 and 6 in the backend
Go to /admin/config/content/formats and click configure on the format that you'll be using. 



Scroll all the way down and click on "Limit allowed HTML tags" tab. Now replace &lt;dl&gt; with &lt;dl class&gt;