_layouts/redirect.html (12 lines of code) (raw):
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Redirecting to {{ page.redirect }}</title>
<meta http-equiv="refresh" content="0; URL={{ page.redirect }}">
<link rel="canonical" href="{{ page.redirect }}">
</head>
<body>
Redirecting to <a href="{{ page.redirect }}">{{ page.redirect }}</a>.
</body>
</html>