Fix formatting

tests/e2e/test_validate_treatment.py

@@ -3,19 +3,18 @@
 def test_validate_valid_treatment_with_url(xp_client: XPClient, httpserver):
     # Mock external validation endpoint
     httpserver.expect_request("/external", method="POST").respond_with_json({})
-    
+
     data = {
         "validation_url": httpserver.url_for("/external"),
         "data": {"field1": "abc", "field2": "def", "field3": {"field4": 0.1}},
     }
-    
+
     result = xp_client.validate_treatment(data)
 
     assert result.text == ""
     assert result.status_code == 200
 
 
-
 def test_validate_valid_treatment_with_schema(xp_client: XPClient):
     data = {
         "treatment_schema": {