Improve support for 'stairs' plots

Author: robertoffmoura

plotly/plotlyfig_aux/handlegraphics/updateStair.m

@@ -1,14 +1,7 @@
 function obj = updateStair(obj, dataIndex)
+    %-update line-%
+    updateLineseries(obj, dataIndex); 
 
-%------------------------------------------------------------------------%
-
-%-update line-%
-updateLineseries(obj,dataIndex); 
-
-%------------------------------------------------------------------------%
-
-%-stair shape-%
-obj.data{dataIndex}.line.shape = 'hvh'; 
-
-%------------------------------------------------------------------------%
-end
+    %-stair shape-%
+    obj.data{dataIndex}.line.shape = "hv";
+end