[libhandy] example: Call hdy_init() in the Python demo

[Adrien Plazas <aplazas src gnome org>]

commit a06a54268d95adf1c84707a3dd2c4de32728bd80
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Jan 5 15:30:30 2021 +0500

    example: Call hdy_init() in the Python demo

 examples/example.py | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/examples/example.py b/examples/example.py
index 2a6f27a0..792821a3 100755
--- a/examples/example.py
+++ b/examples/example.py
@@ -8,6 +8,7 @@ gi.require_version('Handy', '1')
 from gi.repository import Handy
 import sys
 
+Handy.init()
 
 window = Gtk.Window(title = "Keypad Example with Python")
 vbox = Gtk.Box(orientation = Gtk.Orientation.VERTICAL)