Get help center sources

curl --request GET \
  --url https://api.gleap.io/v3/shared/helpcenter/sources

{
  "sources": [
    {
      "sourceType": "<any>",
      "type": "<string>",
      "extract": "<any>",
      "url": "<any>",
      "title": "<any>",
      "id": "<any>"
    }
  ]
}