Fix FontSelectionStyle.style output type

Author: kMutagene

src/Plotly.NET/Traces/ObjectAbstractions/Selection.fs

@@ -41,7 +41,9 @@ type FontSelectionStyle() =
 
     // Applies the styles to Font()
     static member style([<Optional; DefaultParameterValue(null)>] ?Color: Color) =
-        (fun (fontSelectionStyle: FontSelectionStyle) -> Color |> DynObj.setValueOpt fontSelectionStyle "color")
+        (fun (fontSelectionStyle: FontSelectionStyle) -> 
+            Color |> DynObj.setValueOpt fontSelectionStyle "color"
+            fontSelectionStyle)
 
 type Selection() =
     inherit DynamicObj()