Indeed, it’s called Ile des Faisans/ Isla de los Faisanes I believe. There’s also Hans island passed between Denmark (Greenland) and Canada. Neither island has two countries using it at the same time or a border on the island which seems to what the source was listing.
https://www.canada.ca/en/global-affairs/news/2022/06/canada-and-the-kingdom-of-denmark-together-with-greenland-reach-historic-agreement-on-long-standing-boundary-disputes.html