curl --request POST \
  --url https://wfapi.yuhe.space/api/workflows/{workflowName}/knowledge-documents \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "<string>",
  "markdown": "<string>",
  "id": "<string>"
}
'

{
  "errCode": 123,
  "errMessage": "<string>",
  "data": {
    "id": "<string>",
    "title": "<string>",
    "markdown": "<string>",
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z"
  }
}