Fix bug with decimal point boolean in 14-segment display writeDigitAscii function.
Fix bug with decimal point boolean in 14-segment display writeDigitAscii function.

jd1056/Adafuit_backpack,SonusMart/Adafruit-LED-Backpack-Library,yangjae/Adafruit-LED-Backpack-Library,adafruit/Adafruit-LED-Backpack-Library,adafruit/Adafruit_LED_Backpack