Fix typo in legend.ts
Fix typo in legend.ts

RobertoMalatesta/plottable,gdseller/plottable,NextTuesday/plottable,RobertoMalatesta/plottable,palantir/plottable,gdseller/plottable,alyssaq/plottable,gdseller/plottable,RobertoMalatesta/plottable,alyssaq/plottable,onaio/plottable,danmane/plottable,palantir/plottable,softwords/plottable,NextTuesday/plottable,softwords/plottable,softwords/plottable,danmane/plottable,NextTuesday/plottable,palantir/plottable,jacqt/plottable,jacqt/plottable,palantir/plottable,danmane/plottable,onaio/plottable,iobeam/plottable,iobeam/plottable,onaio/plottable,alyssaq/plottable,jacqt/plottable,iobeam/plottable