Update AnalogReadSerial_V2.ino

Arduino/AnalogReadSerial_V2/AnalogReadSerial_V2.ino

@@ -9,7 +9,7 @@ void loop() {
     char userinput = Serial.read();
 
     if(userinput == 'g'){
-      int sensorValue = analogRead(A0);
+      int sensorValue = analogRead(A3);
       Serial.println(sensorValue);
       delay(100);        // delay in between reads for stability
     }