[DOCS] Add docs on to_arrow and as_arrow (#2965)

Co-authored-by: Andrew Gazelka <[email protected]>

src/daft-core/src/array/ops/as_arrow.rs

@@ -15,7 +15,6 @@ use crate::{
 pub trait AsArrow {
     type Output;
 
-    /// Retrieve the underlying internal Arrow2 array.
     /// This does not correct for the logical types and will just yield the physical type of the array.
     /// For example, a TimestampArray will yield an arrow Int64Array rather than a arrow Timestamp Array.
     /// To get a corrected arrow type, see `.to_arrow()`.