Remove the "response type indication" from Example Value in Swagger UI

[Scrin]

Currently the Example Value on the ESI page wraps the example response in a { "application/json": value } to indicate that this is the example response for JSON content type. Since ESI only speaks JSON, this is kind of redundant.

For example the https://esi.tech.ccp.is/latest/#!/Universe/get_universe_races Example Value is as follows:

{
  "application/json": [
    {
      "alliance_id": 500001,
      "description": "Founded on the tenets of patriotism and hard work...",
      "name": "Caldari",
      "race_id": 1
    }
  ]
}

This could be replaced with the following:

[
  {
    "alliance_id": 500001,
    "description": "Founded on the tenets of patriotism and hard work...",
    "name": "Caldari",
    "race_id": 1
  }
]

[a-tal]

will take a look at this when I update the swagger-ui

[a-tal]

took a look at upstream swagger-ui v3 again today. they need to fix swagger-api/swagger-ui#2884 (ideally in a backwards compatible way) before we can consider updating.

[a-tal]

this is better handled in the v3 ui, which was just made the default