[docstring] Fix docstring for `CanineConfig` (#26771)
* Remove CanineConfig from check_docstrings
* Run fix_and_overwrite for CanineConfig
* Replace <fill_type> and <fill_docstring> in configuration_canine.py with type and docstring values
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Co-authored-by: vignesh-raghunathan <vignesh_raghunathan@intuit.com>
