Typo in code examples for `Pedersen128::commit_to_DESTINATION`

[AleoAlexander]

Topic: Pedersen128::commit_to_DESTINATION
Location: documentation/language/04_operators.md

Currently:

let salt: scalar = ChaCha::rand_scalar();
let a: address = Pedersen64::commit_to_address(1u8, salt);
let b: field = Pedersen64::commit_to_field(2i64, salt);
let c: group = Pedersen64::commit_to_group(1field, salt);

Expected:

let salt: scalar = ChaCha::rand_scalar();
let a: address = Pedersen128::commit_to_address(1u8, salt);
let b: field = Pedersen128::commit_to_field(2i64, salt);
let c: group = Pedersen128::commit_to_group(1field, salt);

[AleoAlexander]

Closed with #510