fix: update rtd yaml to fix build error

[ChiefHolland]

Contributor Comments

This PR fixes an error experienced when publishing document changes to ReadTheDocs, adding the 'build' section to the yaml file.

Reference:
readthedocs/readthedocs.org#8912 (comment)
https://docs.readthedocs.io/en/stable/config-file/v2.html#build-os

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