docs: add back missing observability examples

[collindutter]

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Add back example.

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hidden: add back missing observability examples
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Issue ticket number and link

Also, when I came to edit the Observability Drivers docs page, not sure whether it was intentional or not, but f5503bd truncated the file https://github.com/griptape-ai/griptape/blob/f5503bdc3c89c9db47498c75eff44ad1201b2873/docs/griptape-framework/drivers/observability-drivers.md, deleting a sample and a lot of log output. I'm pretty sure that should not have happened

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📚 Documentation preview 📚: https://griptape--1787.org.readthedocs.build//1787/