Replace tab with spaces

bennuttall · bennuttall · commit 2587612403ff · 2016-06-03T14:40:02.000+01:00
diff --git a/docs/recipes.rst b/docs/recipes.rst
@@ -251,7 +251,7 @@ the Raspberry Pi when the button is held for 2 seconds::
 	from signal import pause
 
 	def shutdown():
-		check_call(['sudo', 'poweroff'])
+	    check_call(['sudo', 'poweroff'])
 
 	shutdown_btn = Button(17, hold_time=2)
 	shutdown_btn.when_held = shutdown
