Merge pull request #21229 from ocshawn/fix-graphNodeScaleRatioType

fix(type): correct `nodeScaleRatio` option type for graph series

Author: plainheart

src/chart/graph/GraphSeries.ts

@@ -173,7 +173,7 @@ export interface GraphSeriesOption
     /**
      * Symbol size scale ratio in roam
      */
-    nodeScaleRatio?: 0.6,
+    nodeScaleRatio?: number,
 
     draggable?: boolean