[libstdc++,doc] Some link housekeeping

[Jonathan Wakely]

On 2 November 2012 22:00, Gerald Pfeifer wrote:
> Next installment in my "so that libstdc++ hackers do not feel
> neglected" series. ;-)
>
> Applied.
>
> Any volunteer to regenerate the HTML docs after my patches now?

Thanks, I've regenerated them.