Update patient-submission-email.html

Author: david-evans84-NHSD

app/views/emails/patient-submission-email.html

@@ -20,6 +20,7 @@
           </div>
           <div class="pseudo-email-template">
           <p>Your registration application has been sent to ((Name of GP surgery))</p>
+          <p>Your reference number is ((NUMBER))</p>
           <p>Registration is usually completed within 5 days.</p>
 
           <h4>Next steps</h4>