PEP fixes for /company

InvenTree/company/models.py

@@ -78,4 +78,4 @@ class Contact(models.Model):
     role = models.CharField(max_length=100, blank=True)
 
     company = models.ForeignKey(Company, related_name='contacts',
-                                on_delete = models.CASCADE)
+                                on_delete=models.CASCADE)

InvenTree/company/serializers.py

@@ -15,6 +15,7 @@ class CompanyBriefSerializer(serializers.ModelSerializer):
             'name'
         ]
 
+
 class CompanySerializer(serializers.ModelSerializer):
 
     url = serializers.CharField(source='get_absolute_url', read_only=True)