fix arguments for PiSSA preprocess

[keakon]

Fix two bugs:

1. The ArgumentParser does not have a help argument.
2. The --output_dir argument is missing.

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[BenjaminBossan]

Thanks for identifying these errors and providing a fix. Could you please run make style on your changes?

[BenjaminBossan]

@keakon I think your latest commit made it worse :) Your first commit was almost good, I think it was just missing one more empty line between imports and code, there should always be two empty lines.

[keakon]

@keakon I think your latest commit made it worse :) Your first commit was almost good, I think it was just missing one more empty line between imports and code, there should always be two empty lines.

I tried running make style, and it seems I missed a blank line the first time.

[BenjaminBossan]

Thanks a lot for this fix, LGTM.

[BenjaminBossan]

Pinging @fxmeng who added PiSSA, just in case. If there is no response, I'll merge at the end of the week.

[BenjaminBossan]

Thanks again @keakon. We didn't hear back by the end of the week, so I'll just go ahead and merge this now.