net/manual_session: Fix formatting.

src/net/sessions/manual_session.rs

@@ -11,8 +11,8 @@ use crate::{
     net::{
         protocols::{ProtocolAddress, ProtocolPing},
         sessions::Session,
-        ChannelPtr, Connector, P2p,
         utility::sleep,
+        ChannelPtr, Connector, P2p,
     },
     system::{StoppableTask, StoppableTaskPtr},
 };