Document redirection link

[dp1218]

The redirection may be broken if the javascript of the page cannot be executed because of a middleware or if the browser of the client disabled it. Also note that the meta redirect is set as deprecated by the W3C.

With those conditions, the human may land on a page which is in fact a dead end because no information is provided to tell them what should have happened.

This PR proposes a fix by printing a link to click to follow manually the redirection.

[pawamoy]

Thanks for the reminder @dp1218 🙂 I have approved the PR and will merge it in a couple days.