Update normalize_with_audio.py

[taras-sereda]

nit. fix return type. normalize returns a set of hypothesis.

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[github-actions[bot]]

This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days.

[ekmb]

Hi @taras-sereda , just checking if this PR is still a draft?

[github-actions[bot]]

This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days.

[github-actions[bot]]

This PR was closed because it has been inactive for 7 days since being marked as stale.