community[patch]: doc loaders mypy fixes (#17368)
**Description:** Fixed `type: ignore`'s for mypy for some
document_loaders.
**Issue:** [Remove "type: ignore" comments #17048
](https://github.com/langchain-ai/langchain/issues/17048)
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Co-authored-by: Robby <h0rv@users.noreply.github.com>
Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
