Add reference to Fair into Reality report

[KoalaGeo]

https://ec.europa.eu/info/sites/default/files/turning_fair_into_reality_0.pdf

[andrea-perego]

If I may, I would suggest referring to this document via its DOI, to avoid the broken link issue in the future:

https://doi.org/10.2777/1524

Also, it would be probably better to add it as a bibliographic reference in bpconfig.js:

"FAIR-XG":{
  href:"https://doi.org/10.2777/1524",
  title:"Turning FAIR into reality. Final report and action plan from the European Commission expert group on FAIR data",
  publisher: "Publications Office",
  date: "2018"
},

BTW, another possibly useful reference is the one I mentioned in https://github.com/w3c/sdw/issues/1179#issuecomment-951599100 , which is the result of work that was triggered by the report above, and tries to define precise criteria to assess compliance with the FAIR principles.

"FAIR-DMM":{
  href:"https://doi.org/10.15497/rda00050",
  title:"FAIR Data Maturity Model. Specification and Guidelines (1.0)",
  publisher: "Research Data Alliance",
  date: "2020"
},

[KoalaGeo]

@andrea-perego amended as suggested

[andrea-perego]

@andrea-perego amended as suggested

Thanks!