fix tests

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -
hmm well .. not sure why or how .. but the current test setup is broken, so I am just trying to fix that.

now what is the process for registering the ``Symfony\Cmf\Bundle\RoutingBundle\Tests\Resources\Document`` namespace so that we can use ``Symfony\Cmf\Bundle\RoutingBundle\Tests\Resources\Document\Content`` ?