Fix typo.

ticdesk_events/views.py

@@ -92,7 +92,7 @@ def register_event(request, cn):
             if bool(TeckidsParent.objects.filter(
                 given_name=register_form.cleaned_data['guardian_first_name'],
                 sn=register_form.cleaned_data['guardian_last_name']
-            ):
+            )):
                 # Guardian with name exists - check other attributes
                 guardian = TeckidsParent.objects.get(
                     given_name=register_form.cleaned_data['guardian_first_name'],