How to remove applicant resume from referral source notification message

We are trying to edit the notification message the employee receives when an applicant lists them as their referral source.  The notification includes a link to the candidate's application details (address, contact information, etc) and attached resume which we would like to remove from the message so employees don't have access to this information.  Just the first part of the notification is sufficient - "Applicant, Name has identified you as the referral source in the job application for vacancy IRC123 . The job application will be processed in due course. Thank you for your referral."

Editing the below seeded messages had no effect: