fixing typo

Author: siddacious

examples/mcp4728_simpletest.py

@@ -8,8 +8,7 @@
 mcp4728.channel_a.value = 65535 # Voltage = VDD
 mcp4728.channel_b.value = int(65535/2) # VDD/2
 mcp4728.channel_c.value = int(65535/4) # VDD/4
-
-mcp4728.channel_d.value = int(65535/4) # Vref.INTERNAL/4 * 2 => 2.048/4 * 2 = 2.048/2 =  ~ 1.024V
+mcp4728.channel_d.value = 0 # 0V
 
 
 mcp4728.save_settings() # save the current values to the eeprom,making them the default on power up