minor fix.

tienda_ilusion/don_confiao/forms.py

@@ -1,4 +1,6 @@
 from django import forms
+from django.forms.models import inlineformset_factory
+
 from django.forms.widgets import DateInput, DateTimeInput
 
 from .models import Sale, SaleLine, ReconciliationJar
@@ -33,13 +35,14 @@ class PurchaseLineForm(forms.ModelForm):
         ]
 
 
-LineaFormSet = forms.models.inlineformset_factory(
+LineaFormSet = inlineformset_factory(
     Sale,
     SaleLine,
     extra=1,
     fields='__all__'
 )
 
+
 class ReconciliationJarForm(forms.ModelForm):
     class Meta:
         model = ReconciliationJar