PPHA-266: More fixing white space issues

Author: jamiefalcus

lung_cancer_screening/questions/forms/ethnicity_form.py

@@ -23,4 +23,4 @@ def __init__(self, *args, **kwargs):
 
     class Meta:
         model = ResponseSet
-        fields = ['ethnicity']
+        fields = ['ethnicity']

lung_cancer_screening/questions/tests/unit/forms/test_ethnicity_form.py

@@ -45,4 +45,4 @@ def test_is_invalid_when_no_option_is_selected(self):
         self.assertEqual(
             form.errors["ethnicity"],
             ["Select your ethnic background."]
-        )
+        )