404 on C++ SDK changes link

Hi,

Just noticed that this link is broken

http://www.rhino3d.com/download/rhino-sdk/5.0/commercial/changes

I found it when downloading the latest C++ SCK from this page

http://www.rhino3d.com/download/rhino-sdk/5.0/commercial

@brian, can you look into this?

FYI, it is still the case with the latest release

Got it, thanks.