Update lib.rs

wafel_app_ui/src/lib.rs

@@ -9,7 +9,7 @@
 //! rebuilding it while the app is running with the `reload` feature enabled.
 //! Commands to run (in separate terminals):
 //!
-//! ```sh'
+//! ```sh
 //! cargo run -p wafel_app --features reload
 //! cargo watch -w wafel_app_ui -x "build -p wafel_app_ui"
 //! ```