joystick: Add missing '* ' in example

Signed-off-by: Francois Berder <fberder@outlook.fr>

Author: francois-berder

examples/joystick_example.py

@@ -12,10 +12,10 @@
 from letmecreate.click import joystick
 
 OFFSET = 98
-MAXIMUM = OFFSET2
+MAXIMUM = OFFSET * 2
 
 def get_led_mask(perc):
-    div = int((1. - perc)led.LED_CNT)
+    div = int((1. - perc) * led.LED_CNT)
     if div > led.LED_CNT:
         div = led.LED_CNT