Incorrect import for resnet based actor-critic model

[prithv1]

The following line https://github.com/allenai/embodied-rl/blob/c299cc9e8a1075c801f7e7b4d9c21264c401f71d/experiments/objectnav_robothor_rgb_ddppo.py#L14 importing the ResNet backbone based actor critic model should be changed to from models.resnet_tensor_object_nav_models import ResnetTensorObjectNavActorCritic

[jordis-ai2]

Thanks! If the experiment file survives the cleanup for release, we'll fix it :)

[Lucaweihs]

This has been fixed.