Added config for configuration_clip.py
# What does this PR do?
Based on issue: https://github.com/huggingface/transformers/issues/19487
@ydshieh could you please check it?

The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_19703). All of your documentation changes will be reflected on that endpoint.