BinViewChunkedBuilder has incorrect docs

[kevinli1993]

Description

According to this page, BinViewChunkedBuilder::new takes the arguments (capacity and bytes_capacity).

Arguments
 - capacity - Number of string elements in the final array.
 - bytes_capacity - Number of bytes needed to store the string values.

However, the function signature only has name and capacity.

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Screenshot:

Link

https://docs.pola.rs/api/rust/dev/polars/chunked_array/builder/struct.BinViewChunkedBuilder.html

[krasnobaev]

The bytes_capacity argument was originally used in the StringChunkedBuilder constructor. However, since StringChunkedBuilder is now type-aliased to BinViewChunkedBuilder, this parameter is no longer required.

This change was introduced in #13748 and particularly here.

I will submit a PR for this shortly.