fix(notification): fixed formatting and linting

src/admin/__init__.py

@@ -4,8 +4,8 @@
 from src.admin import (  # noqa: F401
     clients,
     finance,
+    notifications,
     productivity,
     projects,
     services,
-    notifications,
 )

src/admin/notifications.py

@@ -1,7 +1,9 @@
 from django.contrib import admin
+
 from src.admin.base import admin_site
 from src.models.notifications import Notification
 
+
 @admin.register(Notification, site=admin_site)
 class NotificationAdmin(admin.ModelAdmin):
     list_display = ("recipient", "subject", "status", "sent_at", "created_at")