Update pie_demo_features.py

line break added before "plt.show()" line

Author: ugurthemaster

examples/pie_and_polar_charts/pie_demo_features.py

@@ -29,4 +29,5 @@
         autopct='%1.1f%%', shadow=True, startangle=90)
 # Set aspect ratio to be equal so that pie is drawn as a circle.
 plt.axis('equal')
+
 plt.show()