[cons_smooth] Translation Updates

[HumphreyYang]

This PR updates the lecture cons_smooth.

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[HumphreyYang]

Hi @mmcky,

I am getting:

WARNING: unsupported theme option 'download_nb_path' given

Is this related to the theme version in the environment?

[HumphreyYang]

Hi @mmcky,

I am getting:

WARNING: unsupported theme option 'download_nb_path' given

Is this related to the theme version in the environment?

No worries @mmcky, I just updated the package version in the colab runner.