fix download link (cf. #205)
fix download link (cf. #205)

RDFLib/rdflib,armandobs14/rdflib,ssssam/rdflib,ssssam/rdflib,yingerj/rdflib,avorio/rdflib,armandobs14/rdflib,dbs/rdflib,marma/rdflib,dbs/rdflib,RDFLib/rdflib,yingerj/rdflib,avorio/rdflib,marma/rdflib,marma/rdflib,dbs/rdflib,RDFLib/rdflib,yingerj/rdflib,ssssam/rdflib,ssssam/rdflib,yingerj/rdflib,avorio/rdflib,dbs/rdflib,armandobs14/rdflib,avorio/rdflib,armandobs14/rdflib,marma/rdflib,RDFLib/rdflib