docs: source button

[johnnv1]

📚 Documentation

After #2727 the button source redirects to the code of the function/method isn't working

This can be checked in any current latest kornia docs: https://kornia.readthedocs.io/en/latest/

One of the main problems is the #2727 patch works locally, but not in readthedocs deploy

As context, the stable version (the docs from last release), is before #2727, where the source button didn't redirect to kornia github, but to a docs page within the source code

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Example of the issue