`digest` crate README example has the wrong return type?

[juliusl]

The first example in the README has this,

Now you can write the following code:

use sha2::{Sha256, Digest};

let mut hasher = Sha256::new();
let data = b"Hello world!";
hasher.update(data);
// `input` can be called repeatedly and is generic over `AsRef<[u8]>`
hasher.update("String data");
// Note that calling `finalize()` consumes hasher
let hash = hasher.finalize();
println!("Result: {:x}", hash);

In this example hash has type GenericArray<u8, U64>, which is a generic alternative to [u8; 64].

Shouldn't it be GenericArray<u8, U32>?

From https://docs.rs/sha2/0.10.8/sha2/type.Sha256.html:

pub type Sha256 = CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, U32, OidSha256>>;

[tarcieri]

Yes, looks like the digest was changed from Blake2b to Sha256, but that section was not updated accordingly