Documentation for vad_threshold and dead links, practical tutorials

[sparky-vision]

[Edit: my vad_threshold issue might be related to wyoming-satellite, so I'll move that issue there.]

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The page automatic model training gives two links, one for training models and an example config file. These links point to:

https://notebooks.githubusercontent.com/dscripka/openWakeWord/blob/97a48a211dd1bd89bd96877ea9ca6f7f756352e9/examples/custom_model.yml

And

https://notebooks.githubusercontent.com/dscripka/openWakeWord/blob/97a48a211dd1bd89bd96877ea9ca6f7f756352e9/notebooks/training_models.ipynb

Both links are 404.

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Finally, it would be very helpful to have more practical information about training custom models, specifically practical examples on including your own training data. I myself have a large collection of not_wake_word recordings from the days of Mycroft-Precise that I collected, sounds or words that are close, which would be useful for adversarial training, but it's not clear to me how I would use them in the current setup, or indeed if that's even possible. A tutorial would be greatly appreciated.