I was able to stop the redirect by clicking on the X next to the address bar on the browser. If your browser is too quick for you, you can also see an April archive of the page at http://web.archive.org/web/20160423131024/http://ms-iot.github.io/content/en-US/win10/DB410c.htm.
However, I think the page has changed/been updated and they want you to go to a new page, but the redirect link is wrong. The new page/instruction seems to be here: https://developer.microsoft.com/en-us/windows/iot/getstarted.
 Here comes the disclaimer! Since this is a MS maintained page there’s really no way to tell for sure what their intentions are. Best to contact them directly to be sure.