Updated supported RFCs reference documentation
@@ -22,6 +22,7 @@ based applications requiring SSH support.
* [RFC 5480 - Elliptic Curve Cryptography Subject Public Key Information](https://tools.ietf.org/html/rfc5480)
* [RFC 6668 - SHA-2 Data Integrity Verification for the Secure Shell (SSH) Transport Layer Protocol](https://tools.ietf.org/html/rfc6668)
* [RFC 8160 - IUTF8 Terminal Mode in Secure Shell (SSH)](https://tools.ietf.org/html/rfc8160)
+* [RFC 8268 - More Modular Exponentiation (MODP) Diffie-Hellman (DH) Key Exchange (KEX) Groups for Secure Shell (SSH)](https://tools.ietf.org/html/rfc8268)
* [RFC 8308 - Extension Negotiation in the Secure Shell (SSH) Protocol](https://tools.ietf.org/html/rfc8308)
* **Note:** - the code contains [**hooks**](./docs/event-listeners.md#kexextensionhandler) for implementing the RFC but
beyond allowing convenient support for the required protocol details, it does not implement any default logic that handles
