See `process_results` from rust's itertools, for when `Result` feature is added

[cjrh]

https://users.rust-lang.org/t/help-translating-for-loop-into-iterator-chain/122593/13?u=cjrh

use itertools::Itertools;

let has_desc: bool = buffer.lines().process_results(|mut lines| {
    lines.any(|line| line.contains("## Description")) //
})?;