[1288][mkdocs.yml] Update with NGSIv2 support section
[1288][mkdocs.yml] Update with NGSIv2 support section

telefonicaid/fiware-cygnus,telefonicaid/fiware-cygnus,Fiware/context.Cygnus,Fiware/context.Cygnus,Fiware/context.Cygnus,Fiware/data.Cygnus,telefonicaid/fiware-cygnus,telefonicaid/fiware-cygnus,Fiware/data.Cygnus,Fiware/data.Cygnus,Fiware/context.Cygnus