message: Examples: Noise Reduction: improve text
diff: @@ -67,7 +67,7 @@ void SerialManager::printHelp(void) {
  Serial.println(" p: Switch to built-in PCB microphones");
  Serial.println(" m: switch to external mic via mic jack");
  Serial.println(" l: switch to line-in via mic jack");
  - Serial.print( " k/K: Increase the digital gain (cur:"); Serial.print(myState.digital_gain_dB); Serial.println(" dB)");
  + Serial.print( " k/K: Incr/Decrease the digital gain (cur:"); Serial.print(myState.digital_gain_dB); Serial.println(" dB)");
  Serial.println(" Noise Reduction: No Prefix");
  Serial.print( " e/E: Enable/Disable NR (is_enabled = "); Serial.print(myState.NR_enable); Serial.println(")");
  Serial.print( " t/T: Raise/Lower learning attack (cur: "); Serial.print(myState.NR_attack_sec); Serial.println(" sec)");
  