Wrong link for error document validation

[hannob]

trafficstars

When trying to validate an URL which returns an HTTP error (e.g. 404), the validator will give an error ("Sorry! This document cannot be checked.").

On that error page, it tells the user: "You can choose to validate the received error document"

However, the link it gives there does not work. It appears to be outdated (it uses a legacy ; separator for URL variables, and it has a wrong path - /markup/check instead of just /check).