Updated notes in digitalInputPullup

Author: tigoe

build/shared/examples/2.Digital/DigitalIputPullup/DigitalIputPullup.ino

@@ -37,8 +37,8 @@ void loop(){
   Serial.println(sensorVal);
 
   // Keep in mind the pullup means the pushbutton's
-  // logic is inverted. It goes HIGH when it's pressed,
-  // and LOW when it's not. Turn on pin 13 when the 
+  // logic is inverted. It goes HIGH when it's open,
+  // and LOW when it's pressed. Turn on pin 13 when the 
   // button's pressed, and off when it's not:
   if (sensorVal == HIGH) {
     digitalWrite(13, LOW);