fix PathGraphics params description #8178
fix PathGraphics params description #8178

AnalyticalGraphicsInc/cesium,CesiumGS/cesium,YonatanKra/cesium,CesiumGS/cesium,YonatanKra/cesium,likangning93/cesium,CesiumGS/cesium,AnalyticalGraphicsInc/cesium,progsung/cesium,YonatanKra/cesium,likangning93/cesium,progsung/cesium,CesiumGS/cesium,likangning93/cesium,YonatanKra/cesium,CesiumGS/cesium,likangning93/cesium,likangning93/cesium