Fix typo in base.py

[eltociear]

Description

overriden -> overridden

[gradio-pr-bot]

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[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
gradio	minor

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With the following changelog entry.

Fix typo in base.py

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[hannahblair]

Nice catch! Thanks @eltociear!