Look at the timing relationship between your waveform and the published one. They are the same. What exactly do you think is wrong? What value resistor did you use for the pullup? Your output should be a square wave, so I'm thinking your pullup is too low.
Ok you're right, it is inverted ( I'm cross-eyed this morning ) And it's distorted. The good news is you're much closer than you were before. Check your pullup resistor with an ohmmeter, make sure it's connected to positive voltage, that you don't have the pullup voltage reversed, disconnect anything else from the output. At this point, it's a matter of carefully checking your connections.