Try to fix router registration

```
*** [err :: frontend-3.frontend.production] {"handler":"redirect","incoming_path":"/service-manual/digital-by-default/assessments-before-2014","redirect_to":"/service-manual/digital-by-default/","redirect_type":"permanent","route_type":"exact","errors":{"redirect_to":["is not a valid absolute URL path"]}}
```

Doesn't like trailing slashes.