fix reflect changed method name

backend/djangoindia/db/admin.py

@@ -11,7 +11,7 @@
 from django.template.response import TemplateResponse
 from django.urls import path
 
-from djangoindia.bg_tasks.event_registration import send_mass_email_task
+from djangoindia.bg_tasks.event_registration import send_mass_mail_task
 from djangoindia.db.models.communication import ContactUs, Subscriber
 from djangoindia.db.models.event import Event, EventRegistration
 from djangoindia.db.models.partner_and_sponsor import (
@@ -124,7 +124,7 @@ def send_email_view(self, request):
                         recipient_email = registration.email
                         emails.append((subject, message, from_email, [recipient_email]))
 
-                    send_mass_email_task(emails, fail_silently=False)
+                    send_mass_mail_task(emails, fail_silently=False)
                     messages.success(
                         request, f"{len(emails)} emails sent successfully."
                     )