PEP8 fix

netbox/netbox/tables/columns.py

@@ -7,7 +7,7 @@ from django.contrib.auth.models import AnonymousUser
 from django.db.models import DateField, DateTimeField
 from django.template import Context, Template
 from django.urls import reverse
-from django.utils.html import escape 
+from django.utils.html import escape
 from django.utils.formats import date_format
 from django.utils.safestring import mark_safe
 from django_tables2.columns import library