Update a document

curl --request PATCH \
  --url https://api.fortressproductivity.com/v1/documents/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "<string>",
  "content": "<unknown>",
  "markdown": "<string>",
  "access_mode": "private",
  "reason": "<string>"
}
'

{
  "id": "<string>",
  "workspace_id": "<string>",
  "title": "<string>",
  "created_by_actor_id": "<string>",
  "updated_by_actor_id": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "content": "<unknown>"
}