swagger/openapi url response is missing namespace in POST response

[shorsher]

The openapi/swagger url's returned when creating a custom contract api seem to omit the namespace now, which breaks the link.

example response:

{
    "id": "0ee89842-3db2-43f5-8469-9f894d616332",
    "namespace": "default",
    "interface": {
        "id": "cf7c0b1f-7b90-4442-9794-58afcc8b5ba1"
    },
    "location": {
        "address": "0xd22d700e9f8b3ecac72126d1bf6fefc513787954"
    },
    "name": "simple-storage",
    "message": "882a64f2-7f71-4a9a-9eb9-90ca0f56ce2c",
    "urls": {
        "openapi": "http://127.0.0.1:5000/api/v1/namespaces//apis/simple-storage/api/swagger.json",
        "ui": "http://127.0.0.1:5000/api/v1/namespaces//apis/simple-storage/api"
    }
}

Note, the response from GET /apis works great.