added show_colorbar=True to trisurf docs

Author: Kully

plotly/tools.py

@@ -3622,6 +3622,7 @@ def dist_origin(x, y, z):
         fig = FF.create_trisurf(
             x, y, z, simplices,
             color_func=colors,
+            show_colorbar=True,
             title=' Modern Art'
         )