[DOC] Improve pipeline() docstrings for config and tokenizer (#8123)
[DOC] Improve pipeline() docstrings for config and tokenizer (#8123)

* Improve pipeline() docstrings

* make style

* Update wording for config
huggingface/transformers,huggingface/transformers,huggingface/transformers,huggingface/transformers,huggingface/pytorch-transformers