Fixed failing test after drawio default url change

[bookstack] / dev / api / responses / pages-list.json

{
        "data": [
                {
                        "id": 1,
                        "book_id": 1,
                        "chapter_id": 1,
                        "name": "How to create page content",
                        "slug": "how-to-create-page-content",
                        "priority": 0,
                        "draft": false,
                        "template": false,
                        "created_at": "2019-05-05T21:49:58.000000Z",
                        "updated_at": "2020-07-04T15:50:58.000000Z",
                        "created_by": 1,
                        "updated_by": 1,
                        "owned_by": 1
                },
                {
                        "id": 2,
                        "book_id": 1,
                        "chapter_id": 1,
                        "name": "How to use images",
                        "slug": "how-to-use-images",
                        "priority": 2,
                        "draft": false,
                        "template": false,
                        "created_at": "2019-05-05T21:53:30.000000Z",
                        "updated_at": "2019-06-06T12:03:04.000000Z",
                        "created_by": 1,
                        "updated_by": 1,
                        "owned_by": 1
                },
                {
                        "id": 3,
                        "book_id": 1,
                        "chapter_id": 1,
                        "name": "Drawings via draw.io",
                        "slug": "drawings-via-drawio",
                        "priority": 3,
                        "draft": false,
                        "template": false,
                        "created_at": "2019-05-05T21:53:49.000000Z",
                        "updated_at": "2019-12-18T21:56:52.000000Z",
                        "created_by": 1,
                        "updated_by": 1,
                        "owned_by": 1
                }
        ],
        "total": 322
}