Make the default area accessible at /doc.json

[JorickPepin]

Having the following configuration, I can access the default area at /doc (as well as /doc/default), but I get a 404 error at /doc.json. I have to go to /doc/default.json to get it. Is this configurable? Thanks.

app.swagger_json:
    path: /doc/{area}.json
    methods: GET
    defaults: { _controller: nelmio_api_doc.controller.swagger_json, area: default }

app.swagger_ui:
   path: /doc/{area}
   methods: GET
   defaults: { _controller: nelmio_api_doc.controller.swagger_ui, area: default }