message: BLE: clarify println in isAdvertising() message
diff: @@ -229,7 +229,7 @@ bool BLE::isAdvertising(bool printResponse)
  {
  String s = getCmdResponse();
  if (printResponse) {
  - Serial.println("BLE: isConnected() response: ");
  + Serial.println("BLE: isAdvertising() response: ");
  Serial.print(s);
  }
  //return s.startsWith("STATE CONNECTED"); //original
  