fix common_voice
See https://github.com/huggingface/datasets-preview-backend/blob/f54543709237215db38dc4064ce6710f6e974d79/tests/models/test_row.py#L65 and https://github.com/huggingface/datasets-preview-backend/blob/f54543709237215db38dc4064ce6710f6e974d79/tests/models/test_typed_row.py#L63
fix common_voice: See https://github.com/huggingface/datasets-preview-backend/blob/f54543709237215db38dc4064ce6710f6e974d79/tests/models/test_row.py#L65 and https://github.com/huggingface/datasets-preview-backend/blob/f54543709237215db38dc4064ce6710f6e974d79/tests/models/test_typed_row.py#L63