typo correction in a comment

src/lib.rs

@@ -2,7 +2,7 @@ use tokio::sync::mpsc;
 
 /// Our Network interface which is accomplished through a language feature of Rust called 'traits'
 /// 
-/// Note the async_trait annotation; this adds support for defining async functions as part of your interface. The stable version of rust currently doesn't have this, so we rely on a crate for as a workaround.
+/// Note the async_trait annotation; this adds support for defining async functions as part of your interface. The stable version of rust currently doesn't have this, so we rely on a crate as a workaround.
 #[async_trait::async_trait]
 pub trait Network {
     /// Send a message to the identifier specified by the 'to' field.