Rollup merge of #150578 - CieriA:patch-1, r=Mark-Simulacrum

Fix a typo in the docs of AsMut for #149609

This PR fixes the documentation of the trait `AsMut`, where in the sentence "[ ... ] interface which work with any type [ ... ]", "work" should be replaced by "works".

This also changes the later "[ ... ] into a byte slice ([u8]) or byte vector (Vec<u8>) [ ... ]" to be "[ ... ] into a byte slice ([u8]) or a byte vector (Vec<u8>) [ ... ]" to maintain consistency between "a byte slice" and "a byte vector".

Issue: rust-lang/rust#149609

Author: JonathanBrouwer