Link to non-existent domain

[matt-telstra]

On this page, the red overview button points to tungstenfabric.io. It should point to tungsten.io.

Thankfully tungstenfabric.io now redirects to tungsten.io, so it's not as bad as a few months ago. But navigating to tungstenfabric.io results in a big security warning in my browser because of cert issues.

So it would be better if the link just pointed to the same domain. What would be even more robust would be if the link was just a relative link.