HPKE: apply @extiop suggestion

mla/src/crypto/hpke.rs

@@ -87,7 +87,7 @@ pub(crate) fn dhkem_decap(
 //
 // rust-hpke provides `setup_sender` and `setup_receiver`
 // Unfortunately, re-using their code means:
-// - implementing the rust-hpke `Kem` traitsuse hpke::kdf::LabeledExpand; for our Hybrid encryption KEM, while we are not yet able to convert a private key to a public one
+// - implementing the rust-hpke `Kem` trait for our Hybrid encryption KEM, while we are not yet able to convert a private key to a public one
 // - re-implement the AEAD trait for our AesGcm, to be able to repair
 // - implementing struct to use suite ID which are not in the RFC (because we are using our own Hybrid KEM)
 //