QtCharts plugins.qmltype file provides a wrong namespace for QLegend

As mentioned in subject a wrong namespace provided for the QLegend in plugins.qmltype. Thus Qt Creator will not see a property legend of the ChartsView.

The workaround for this issue is to change this line

Property { name: "legend"; type: "QLegend"; isReadonly: true; isPointer: true }

to this

Property { name: "legend"; type: "QtCharts::QLegend"; isReadonly: true; isPointer: true }