README: mention moving domain prefix from xhpke to cose

Author: karalabe

README.md

@@ -16,7 +16,7 @@ This repository is parameter selection and lightweight wrapper around a number o
     - **MLDSA ([RFC-DRAFT](https://datatracker.ietf.org/doc/html/draft-ietf-lamps-dilithium-certificates))**: Security level 3 (`ML-DSA-65`)
   - **RSA ([RFC-8017](https://datatracker.ietf.org/doc/html/rfc8017))**: 2048-bit, `SHA256`
 - Encryption
-  - **xHPKE ([RFC-9180](https://datatracker.ietf.org/doc/html/rfc9180))**: `X-WING`, `HKDF`, `SHA256`, `ChaCha20`, `Poly1305`, `dark-bio-v1:` prefix
+  - **xHPKE ([RFC-9180](https://datatracker.ietf.org/doc/html/rfc9180))**: `X-WING`, `HKDF`, `SHA256`, `ChaCha20`, `Poly1305`
     - **X-WING ([RFC-DRAFT](https://datatracker.ietf.org/doc/html/draft-connolly-cfrg-xwing-kem))**: `MLKEM`, `ECC`
       - **ECC ([RFC-7748](https://datatracker.ietf.org/doc/html/rfc7748))**: `X25519`
       - **MLKEM([RFC-DRAFT](https://datatracker.ietf.org/doc/html/draft-ietf-ipsecme-ikev2-mlkem))**: Security level 3 (`ML-KEM-768`)
@@ -26,7 +26,7 @@ This repository is parameter selection and lightweight wrapper around a number o
   - **HKDF ([RFC-5869](https://datatracker.ietf.org/doc/html/rfc5869))**: `SHA256`
 - Serialization
   - **CBOR ([RFC-8949](https://datatracker.ietf.org/doc/html/rfc8949))**: restricted to `integer`, `text`, `bytes`, `array`, `map[int]`
-  - **COSE ([RFC-8152](https://datatracker.ietf.org/doc/html/rfc8152))**: `COSE_Sign1`, `COSE_Encrypt0`
+  - **COSE ([RFC-8152](https://datatracker.ietf.org/doc/html/rfc8152))**: `COSE_Sign1`, `COSE_Encrypt0`, `dark-bio-v1:` domain prefix
 
 All functionality is WASM ready.