Incorrect indexing in the README example

[Mannat Singh]

In the README, real_labels = {f'ILSVRC2012_val_{i:08d}.JPEG': labels for i, labels in enumerate(json.load('real.json'))} should be changed to real_labels = {f'ILSVRC2012_val_{i + 1:08d}.JPEG': labels for i, labels in enumerate(json.load('real.json'))} since the numbering starts from 1 and not 0.

[Lucas Beyer]

Thanks for letting us know and sorry for the delay. Fixed in #1