Translated image_captioning from en to es
Author: gisturiz
Pull request: yes

# What does this PR do?

Translated image_captioning from en to es from issue #28936 began by @stevhliu. I will continue to go through the documentation and make the correct translations.
<!--
Congratulations! You've made it this far! You're not quite done yet though.

Once merged, your PR is going to appear in the release notes with the title you set, so make sure it's a great title that fully reflects the extent of your awesome contribution.

Then, please replace this with a description of the change and which issue is fixed (if applicable). Please also include relevant motivation and context. List any dependencies (if any) that are required for this change.

Once you're done, someone will review your PR shortly (see the section "Who can review?" below to tag some potential reviewers). They may suggest changes to make the code even better. If no one reviewed your PR after a week has passed, don't hesitate to post a new comment @-mentioning the same persons---sometimes notifications get lost.
-->

<!-- Remove if not applicable -->

Fixes # (issue)
#28936

## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
- [x ] Did you read the [contributor guideline](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md#create-a-pull-request),
      Pull Request section?
- [ ] Was this discussed/approved via a Github issue or the [forum](https://discuss.huggingface.co/)? Please add a link
      to it if that's the case.
- [ ] Did you make sure to update the documentation with your changes? Here are the
      [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and
      [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation).
- [ ] Did you write any new necessary tests?


## Who can review?

@stevhliu 
Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
members/contributors who may be interested in your PR.

<!-- Your PR will be replied to more quickly if you can figure out the right person to tag with @

 If you know how to use git blame, that is the easiest way, otherwise, here is a rough guide of **who to tag**.
 Please tag fewer than 3 people.

Models:

- text models: @ArthurZucker and @younesbelkada
- vision models: @amyeroberts
- speech models: @sanchit-gandhi
- graph models: @clefourrier

Library:

- flax: @sanchit-gandhi
- generate: @gante
- pipelines: @Narsil
- tensorflow: @gante and @Rocketknight1
- tokenizers: @ArthurZucker
- trainer: @muellerzr and @pacman100

Integrations:

- deepspeed: HF Trainer/Accelerate: @pacman100
- ray/raytune: @richardliaw, @amogkam
- Big Model Inference: @SunMarc
- quantization (bitsandbytes, autogpt): @SunMarc and @younesbelkada

Documentation: @stevhliu and @MKhalusova

HF projects:

- accelerate: [different repo](https://github.com/huggingface/accelerate)
- datasets: [different repo](https://github.com/huggingface/datasets)
- diffusers: [different repo](https://github.com/huggingface/diffusers)
- rust tokenizers: [different repo](https://github.com/huggingface/tokenizers)

Maintained examples (not research project or legacy):

- Flax: @sanchit-gandhi
- PyTorch: See Models above and tag the person corresponding to the modality of the example.
- TensorFlow: @Rocketknight1

 -->


Comments:
Hi @stevhliu and @gisturiz, yes happy to help🤗. In general is very good, I would comment the following:

* Using `"Subtítulos de imagen"` instead of `"Subtitulación de Imágenes"` when translating `"Image captioning"`, as it sounds more natural.
* In the same way using `"el proceso de preprocesamiento"` instead of `"la canalización de preprocesamiento"` in the line 111.
* And translate this part `[this guide]` in line 153.

Remember to add this new documentation in the file `es/_toctree.yml` . You can read [this guide](https://github.com/huggingface/transformers/blob/main/docs/TRANSLATING.md) for more information.

Hi @aaronjimv thanks for your review, I've pushed the updates and should be good now. I'd appreciate any feedback. And thanks to you as well @stevhliu 

Hi @gisturiz, LGTM. 
My final comments would be remove the final `"g"` in `Subtítulos de imágenesg` on the `es/_toctree.yml` file. 
Change the times that `"la subtítulos de imágenes"` appears in the first paragraph to `"los subtítulos de imágenes"`.  
And remember to keep the tag `<Tip>` as original in English, since it is a part of the doc-builder's syntax.

Thanks again, love to see the collaboration here! 🔥 

Hey @gisturiz, a fix has been deployed on the `main` branch that should get the test to pass. Would you mind rebasing on `main` to resolve the error?  🙂