Align explanation with previously altered example code
//! let transport = tcp.upgrade(upgrade::Version::V1).authenticate(secio).multiplex(yamux);
//! # }
//! ```
-//! In this example, `tcp_secio` is a new [`Transport`] that negotiates the secio protocol
+//! In this example, `transport` is a new [`Transport`] that negotiates the
+//! secio and yamux protocols
//! on all connections.
//!
//! ## Network Behaviour
