Update the installation instructions for garage cam

Please update the instruction for the Wyze cam garage controller installation. I did not know that I am supposed to leave the QR code on the door at all times. I assumed it could be removed after the installation and calibration was complete.

I voted for this, but yes, the QR code is the only way the GDC can recognize whether the door is open or closed. Further, it can recognize whether the garage door is only open a couple inches. So totally critical to the proper operation of the GDC.