Update transports/tcp/src/lib.rs

Co-authored-by: Max Inden <[email protected]>

Author: romanb

transports/tcp/src/lib.rs

@@ -51,7 +51,7 @@ use std::{
 /// Represents the configuration for a TCP/IP transport capability for libp2p.
 ///
 /// The TCP sockets created by libp2p will need to be progressed by running the futures and streams
-/// obtained by libp2p through the tokio reactor.
+/// obtained by libp2p on an asynchronous runtime, e.g. the tokio runtime.
 #[derive(Clone, Debug)]
 pub struct TcpConfig {
     /// TTL to set for opened sockets, or `None` to keep default.