Update TF doc test template
# What does this PR do?

The PR #21106 introduced failures in some doctests: 
* src/transformers/models/deit/modeling_tf_deit.py::transformers.models.deit.modeling_tf_deit.TFDeiTForImageClassificationWithTeacher.call
* src/transformers/models/resnet/modeling_tf_resnet.py::transformers.models.resnet.modeling_tf_resnet.TFResNetModel.call
* src/transformers/models/segformer/modeling_tf_segformer.py::transformers.models.segformer.modeling_tf_segformer.TFSegformerForImageClassification.call
* src/transformers/models/vit/modeling_tf_vit.py::transformers.models.vit.modeling_tf_vit.TFViTModel.call

This was due to `processor_class` no longer being passed to `add_code_sample_docstrings` e.g. the changes to [modeling_tf_deit.py](https://github.com/huggingface/transformers/pull/21106/files#diff-d8a9a4a182509f1903e7dbcd751d605285c8b62d0c8213a1a9ae1ba15e9fcc77). 

Whilst `processor_class` could be removed for the PyTorch models doctests, `{processor_class}` hadn't been removed for the equivalent TensorFlow doctest templates. This updates the test templates to match the equivalent PyTorch ones and resolve failing tests. 

## 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#start-contributing-pull-requests),
      Pull Request section?
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      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?
_The documentation is not available anymore as the PR was closed or merged._<|||||>Closed as changes are a subset of changes introduced in #21225 