The example in the documentation for get_dremel_data() seems incorrect at line#1764

[hyperbolic2346]

I know this isn't part of the review, but the example in the documentation for get_dremel_data() seems incorrect at line#1738 (now #1764):

 * Given a LIST column of type `List<List<int>>` like so:
 * ```
 * col = {
 *    [],
 *    [[], [1, 2, 3], [4, 5]],
 *    [[]]
 * }
 * ```
 * We can represent it in cudf format with two level of offsets like this:
 * ```
 * Level 0 offsets = {0, 0, 3, 5, 6}
 * Level 1 offsets = {0, 0, 3, 5, 5}
 * Values          = {1, 2, 3, 4, 5}
 * ```

The Level 0 offset values can't exceed 4, since Level 1 has only 4 ranges (i.e. 5 offsets).
I'll try make sense of this at a later date, but I'm not sure I could follow along.

Originally posted by @mythrocks in #11328 (comment)

[vyasr]

@bdice noticed the same issues while reviewing #11129, which moves these dremel files around but also doesn't modify them. We'll want to do a thorough pass through both the docstring of get_dremel_data and the actual function implementation once both #11129 and of @hyperbolic2346's Parquet-related PRs are merged where we just focus on cleaning up that functionality and documentation.

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[vyasr]

@bdice @hyperbolic2346 is this something you two want to take another look at? I think it got lost in the shuffle of the other PRs.