Added "DataForm" tag on the nuget spec.
Added "DataForm" tag on the nuget spec.

johnsonlu/PropertyTools,jogibear9988/PropertyTools,LavishSoftware/PropertyTools,ZHZG/PropertyTools,ZHZG/PropertyTools,jogibear9988/PropertyTools,punker76/PropertyTools,Mitch-Connor/PropertyTools,objorke/PropertyTools