wrong wav2vec link in audio classification blog
[This wonderful blog](https://huggingface.co/docs/transformers/main/en/tasks/audio_classification#preprocess) has an issue with the wav2vec model card link. See below:  


> 2. Check the sampling rate of the audio file matches the sampling rate of the audio data a model was pretrained with. You can find this information on the Wav2Vec2 `[model card]((https://huggingface.co/facebook/wav2vec2-base))`.

The right link should be https://huggingface.co/facebook/wav2vec2-base


Closed by #18945