Fix determination URL, add missing '/'

opentech/apply/determinations/urls.py

@@ -6,5 +6,5 @@ app_name = 'determinations'
 
 urlpatterns = [
     path('determination/', DeterminationDetailView.as_view(), name="detail"),
-    path('determination/add', DeterminationCreateOrUpdateView.as_view(), name="form"),
+    path('determination/add/', DeterminationCreateOrUpdateView.as_view(), name="form"),
 ]