Fix tiny comment formatting issue in docs
@@ -52,7 +52,7 @@ use throw_str;
/// #[wasm_bindgen]
/// pub fn run() -> ClosureHandle {
/// // First up we use `Closure::wrap` to wrap up a Rust closure and create
-/// a JS closure.
+/// // a JS closure.
/// let cb = Closure::wrap(Box::new(move || {
/// log("timeout elapsed!");
/// }) as Box<FnMut()>);
