Updating System.Text.Json package description (#38691)
Updating System.Text.Json package description (#38691)

* Updating System.Text.Json package description

* Fix ordering and namespace

* Fix description

BrennanConroy/corefx,ViktorHofer/corefx,shimingsg/corefx,wtgodbe/corefx,ericstj/corefx,BrennanConroy/corefx,ericstj/corefx,shimingsg/corefx,ViktorHofer/corefx,wtgodbe/corefx,ViktorHofer/corefx,shimingsg/corefx,ericstj/corefx,ViktorHofer/corefx,wtgodbe/corefx,shimingsg/corefx,shimingsg/corefx,wtgodbe/corefx,wtgodbe/corefx,ericstj/corefx,wtgodbe/corefx,ViktorHofer/corefx,ericstj/corefx,ericstj/corefx,ViktorHofer/corefx,wtgodbe/corefx,shimingsg/corefx,BrennanConroy/corefx,shimingsg/corefx,ericstj/corefx,ViktorHofer/corefx