Use correct attribution in footer of documentation pages

[alamb]

Is your feature request related to a problem or challenge?

To be inline with ASF policy, we should update the text in the footer used in the docs to match the footer used in the main website (https://arrow.apache.org/). i.e. add the trademark attribution test.

I am not sure where the docs are hosted

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response

[andygrove]

This is completed:

https://arrow.apache.org/ballista/user-guide/python.html