fix typos

src/lib.rs

@@ -17,7 +17,7 @@
 //! other.
 //!
 //! You'll find many modules with `::sync` and `::async` submodules that separate these
-//! behaviours. Since it get's tedious to add these on when appropriate a top-level
+//! behaviours. Since it gets tedious to add these on when appropriate, a top-level
 //! convenience module called `websocket::sync` and `websocket::async` has been added that
 //! groups all the sync and async stuff, respectively.
 //!