I doubt that the website is legit, Amazon mentioned the relief fund, but did not see the url in blog post. Also, choice of UI/UX elements does not adhere with Amazon websites, so I doubt whether is legit (I may be wrong, but will consider this website as fake unless url is mentioned in blog post)
It is mentioned in a post on the amazon blog:
https://blog.aboutamazon.com/company-news/amazons-actions-to...