Fix typo in `_primitive_to_phyisical`

[Fokko]

Feature Request / Improvement

In pyarrow.py:

def _primitive_to_phyisical(iceberg_type: PrimitiveType) -> str:
    return visit(iceberg_type, _PRIMITIVE_TO_PHYISCAL_TYPE_VISITOR)

[whisk]

Hi @Fokko, please consider PR #108

[Fokko]

Nice, thanks @whisk 👍

[Fokko]

Closing this, since the PR has been merged. Thanks @whisk for working on this