Use `config_dict_or_path` for deepspeed.zero.Init
# What does this PR do?

While #13587 fixes one DeepSpeed warning, it missed a similar one. This applies the same change of `config` -> `config_dict_or_path` in another location.

## Who can review?

@sgugger (same reviewer as #13587)
I'll let @stas00 merge this after he double-checks it's good :-)<|||||>@stas00, you're welcome! Thanks for the review!