[dox] C++ Interfaces

[Atash]

This link: http://dlang.org/CPP-Interfaces

Is made on this page: http://dlang.org/interface.html

And I *think* (not sure) that since whatever it was originally 
pointing to has disappeared, it should probably end up pointing 
here:

http://dlang.org/cpp_interface.html

Maybe add an anchor to about halfway down the page, so it'd look 
more like:

http://dlang.org/cpp_interface.html#extern-CPP-interfaces

--------------------------------------------------------------------------------

That all said...

Is my assessment correct/proper?

If so, in the great words of my esteemed predecessors from the 
vast wilds of newbie-dom... "What do?"