syntax fix

backend/secfit/diets/views.py

@@ -23,7 +23,8 @@ from diets.permissions import (
 from rest_framework.permissions import (AllowAny)
 from diets.mixins import CreateListModelMixin
 from diets.models import Diet, Mealtype, MealtypeInstance, DietFile, DietInstance
-from diets.serializers import DietSerializer, DietInstanceSerializer, MealtypeSerializer, RememberMeSerializer, MealtypeInstanceSerializer, DietFileSerializer
+from diets.serializers import (DietSerializer, DietInstanceSerializer, MealtypeSerializer,
+                               RememberMeSerializer, MealtypeInstanceSerializer, DietFileSerializer)
 from django.core.exceptions import PermissionDenied
 from rest_framework_simplejwt.tokens import RefreshToken
 from rest_framework.response import Response