Unnamed repository; edit this file 'description' to name the repository.
Rollup merge of #104111 - yancyribbens:add-mutable-to-the-description-for-as-simd-mut, r=scottmcm
rustdoc: Add mutable to the description
Add mutable the description to differentiate [as_simd](https://github.com/rust-lang/rust/blob/master/library/core/src/slice/mod.rs#L3654) from [as_simd_mut](https://github.com/rust-lang/rust/blob/master/library/core/src/slice/mod.rs#L3654).
