Update 6_reference_guide.rst
Update 6_reference_guide.rst
darroyocazorla/crossdata,Stratio/crossdata,pmadrigal/Crossdata,pmadrigal/Crossdata,compae/Crossdata,jjlopezm/crossdata,miguel0afd/crossdata,darroyocazorla/crossdata,Stratio/crossdata,luismcl/crossdata,luismcl/crossdata,gserranojc/Crossdata,gserranojc/Crossdata,hdominguez1989/Crossdata,compae/Crossdata,hdominguez1989/Crossdata,jjlopezm/crossdata,miguel0afd/crossdata