They might have just moved. I can find the article by searching on the Horse Sport site: https://horsesport.com/horse-news/lamaze-submits-forged-medical-documents-court/
Here’s the document referenced (I got there by clicking the link in the above article and it worked): https://horse-sport.s3.ca-central-1.amazonaws.com/wp-content/uploads/2023/09/06152458/Report-of-Dr.-Oulad-Taib-Chirec-Cancer-Institute-dated-05-04-2023-re-Eric-Lamaze-Dutch.pdf