Small typo in documentation of TokenClassificationPipeline
### System Info

https://github.com/huggingface/transformers/blob/v4.23.1/src/transformers/pipelines/token_classification.py#L176


### Who can help?

_No response_

### Information

- [ ] The official example scripts
- [ ] My own modified scripts

### Tasks

- [X] An officially supported task in the `examples` folder (such as GLUE/SQuAD, ...)
- [ ] My own task or dataset (give details below)

### Reproduction

Open the documentation https://huggingface.co/docs/transformers/main_classes/pipelines#transformers.TokenClassificationPipeline.__call__

> word (str) — The token/word classified. This is obtained by decoding the selected tokens. If you want to have the exact string in the original sentence, use start and stop.

### Expected behavior

I'm quite sure it should be "`start` and `end`"
