curl --request DELETE \
  --url https://api.syllable.cloud/api/v1/language_groups/{language_group_id} \
  --header 'Syllable-API-Key: <api-key>'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}