175B download script downloads with api key appended to filename

Created by: tsor13

🐛 Bug

When you run the download_opt17b.sh script to download the weights, it currently downloads as "checkpoint_last-model-part--shard.pt?&Policy=<policy_key>" instead of just "checkpoint_last-model-part--shard.pt".

To Reproduce

Steps to reproduce the behavior (always include the command you ran):

1. Run cmd 'bash metaseq/scripts/download_opt175b.sh "<presigned_url_given_in_email>"'
2. Run cmd ls *pt*

Code sample

I believe this is an easy fix, just change wget "${presigned_url/$str_to_replace/$filename}" to wget -O "$filename" "${presigned_url/$str_to_replace/$filename}"

Expected behavior

I would expect it to save it in the form of ....pt files.

Environment

• fairseq Version (e.g., 1.0 or master): master
• PyTorch Version (e.g., 1.0)
• OS (e.g., Linux): Ubuntu
• How you installed fairseq (pip, source): source
• Build command you used (if compiling from source):
• Python version:
• CUDA/cuDNN version:
• GPU models and configuration:
• Any other relevant information:
• wget version: 1.20.3-1ubuntu1

Additional context