Remove mention of D3
Remove mention of D3

Mentioning D3 is confusing because readers may assume that we are generating D3 code.
vega/vega-lite,vega/vega-lite,uwdata/vega-lite,uwdata/vega-lite,vega/vega-lite,uwdata/vega-lite,uwdata/vega-lite,uwdata/vega-lite,vega/vega-lite,vega/vega-lite