Refactor updateFunctionSurface

Author: robertoffmoura

plotly/Test_plotlyfig.m

@@ -1565,22 +1565,22 @@ function testFunctionSurfacePlotData(tc)
 
             tc.verifyNumElements(p.data, 2);
             tc.verifyEqual(rmfield(p.data{1}, ["colorscale" "x" "y" "z" "surfacecolor"]), struct( ...
-                "scene", 'scene1', ...
-                "type", 'surface', ...
+                "scene", "scene1", ...
+                "type", "surface", ...
                 "opacity", 1, ...
                 "name", '{sin}({x}) {cos}({y})', ...
                 "showscale", false, ...
                 "visible", true, ...
                 "showlegend", true ...
             ));
             tc.verifyEqual(rmfield(p.data{2}, ["x" "y" "z"]), struct( ...
-                "scene", 'scene1', ...
-                "type", 'scatter3d', ...
-                "mode", 'lines', ...
+                "scene", "scene1", ...
+                "type", "scatter3d", ...
+                "mode", "lines", ...
                 "line", struct( ...
                     "color", "rgb(0,0,0)", ...
                     "width", 1.5, ...
-                    "dash", 'solid' ...
+                    "dash", "solid" ...
                 ), ...
                 "name", '{sin}({x}) {cos}({y})', ...
                 "showscale", false, ...