ObjectDetection docs - use numerical identifiers
ObjectDetection docs - use numerical identifiers

Currently, that's the only type of identifier that's supported

TimZaman/DIGITS,Deepomatic/DIGITS,gheinrich/DIGITS-GAN,ethantang95/DIGITS-GAN,bygreencn/DIGITS,dongjoon-hyun/DIGITS,bygreencn/DIGITS,ethantang95/DIGITS-GAN,bygreencn/DIGITS,ethantang95/DIGITS-GAN,ethantang95/DIGITS,dongjoon-hyun/DIGITS,dongjoon-hyun/DIGITS,Deepomatic/DIGITS,Deepomatic/DIGITS,ethantang95/DIGITS,ethantang95/DIGITS,gheinrich/DIGITS-GAN,ethantang95/DIGITS-GAN,dongjoon-hyun/DIGITS,gheinrich/DIGITS-GAN,TimZaman/DIGITS,TimZaman/DIGITS,gheinrich/DIGITS-GAN,ethantang95/DIGITS,bygreencn/DIGITS,Deepomatic/DIGITS,TimZaman/DIGITS