Broken link in Open Images evaluation example

[ehofesmann]

The link to the pre-computed predictions in the Open Images example returns a 404. https://voxel51.com/downloads/fiftyone/tutorials/google-faster_rcnn-openimages_v4-inception_resnet_v2_predictions_3081.csv

This links to the predictions under the Alternative 1: download pre-computed predictions section.

Here is a working link to this file stored in Google Drive: https://drive.google.com/file/d/1AproyovM7ZKyLaQXPJyhnIPM6SEtmPRf/view?usp=sharing