[Rivet] Update DELPHI b fragmentation

[Graeme Watt]

Hi Andy,

On 08/08/16 11:55, Andy Buckley wrote:
> Copying in Graeme Watt from HepData,
>
> Graeme, could we get
> https://inspirehep.net/record/890503
> transcribed into HepData, please?

Done:
   http://hepdata.cedar.ac.uk/view/ins890503
   https://hepdata.net/record/ins890503

Best regards,
Graeme