Sigfox library documentation error: SigFox.endPacket

The documentation on the SigFox library for the _endPacket()_ function contains an error. It says:
"Returns an int: 1 if the packet was sent successfully, 0 if there was an error"

while the example code says ( and is correct):
```c++
if (ret == 0)
      Serial.println("OK");
    else
      Serial.println("KO");
```
URL: https://www.arduino.cc/en/Reference/SigFoxEndPacket
