chore: redirect to the http page to actually check if the protocol update occurs

[raklaptudirm]

Previously the https-everywhere link redirected to https://https-everywhere.badssl.com/, which would always show the https page, thus not checking for the protocol update. This has been changed to redirect to http://https-everywhere.badssl.com/, so that a protocol upgrade can actually be observed.

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[lgarron]

This seems fairly reasonable to me, but the title of this PR doesn't make sense to me. This isn't changing any redirection, it's just updating the link on the index page, right?

[raklaptudirm]

@lgarron Yes, that is what I meant. Feel free to change the name of the pr to something clearer.