Tab example navigating to 404 not found

Dear team,

You might be have already come to know, if not I just want to let you know that the link to example under tab<https://www.w3.org/TR/wai-aria-practices-1.1/#tabpanel> at ARIA 1.1 authoring practices<https://www.w3.org/TR/wai-aria-practices-1.1/> is navigating to a 404 page not found page.

Thanks & Regards
Rakesh Paladugula