Fix model referenced and results in documentation. Model mentioned was inaccessible.
Author: rafaelpadilla
Pull request: yes

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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: @sgugger

Integrations:

- deepspeed: HF Trainer/Accelerate: @pacman100
- ray/raytune: @richardliaw, @amogkam

Documentation: @sgugger, @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: @sgugger
- TensorFlow: @Rocketknight1

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 @amyeroberts @MKhalusova 
 
 This is a (really) small change on the documentation.
 The mentioned model (`MariaK/detr-resnet-50_finetuned_cppe5`) was either removed or set to private. So I could not reproduce the shown example.  
 I basically reference the same model but from another user, which provides a slightly better result. That's why I also updated the metrics.

Comments:
_The documentation is not available anymore as the PR was closed or merged._