You are making the correct edit but probably to the wrong page. The email receipt actually makes use of the WA_Universal_Email > Email_Templates > receipt.php and pp_receipt.php files. So you will need to make the update to these files to add in the details for the options.
I'm including updated versions of these pages with the options added in like your example for you. Just make sure to backup the originals and put these in the proper Email_Templates directory and it should work for you. Let me know if there are any issues.