Keep param on multiple lines

so it scans the same as preceeding test cases

Co-Authored-By: leohemsted <leohemsted@gmail.com>

tests/app/main/views/test_email_branding.py

@@ -174,7 +174,11 @@ def test_cant_create_new_email_branding_with_unknown_domain(
         'southend.essex.gov.uk',
         'Not an organisation-level domain (use essex.gov.uk if appropriate)',
     ),
-    pytest.param('voa.gov.uk', '', marks=pytest.mark.xfail(raises=AssertionError)),
+    pytest.param(
+        'voa.gov.uk',
+        '',
+        marks=pytest.mark.xfail(raises=AssertionError)
+    ),
 ])
 def test_rejects_non_canonical_domain_when_adding_email_branding(
     client_request,