Fix the reference blake2s doc

[dlubarov]

This change is 

[shaharsamocha7]

We reference to this implementation and wanted to credit the writer.
Why do you suggest to change this doc?

Reviewable status: 0 of 1 files reviewed, all discussions resolved

[dlubarov]

Oh, I'll add back the link then, but An AVX512 implementation seems like accidental copypasta in 9dbe5bc (or so I thought) since this one is the pure Rust implementation.

[shaharsamocha7]

Yeah that's probably right

Reviewed 1 of 1 files at r2.
Reviewable status: all files reviewed (commit messages unreviewed), 1 unresolved discussion (waiting on @dlubarov)

---

crates/prover/src/core/vcs/blake2s_ref.rs line 2 at r2 (raw file):

//! A reference implementation of the BLAKE2s compression function, in pure Rust.
//! Based on https://github.com/oconnor663/blake2_simd/blob/master/blake2s/src/avx2.rs .

one small comment

Suggestion:

//! Based on <https://github.com/oconnor663/blake2_simd/blob/master/blake2s/src/avx2.rs>.

[dlubarov]

Done

[shaharsamocha7]

Reviewed 1 of 1 files at r3, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @dlubarov)