Update topic prompts (visibility, competition)

{  "visibility": [    {      "id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",      "text": "What are the best running shoe brands?"    }  ],  "competition": [    {      "id": "7c9e6679-7425-40de-944b-e07fc1f90ae7",      "text": "How does nike.com compare to its competitors?"    }  ]}