fix: add await

Author: Turtle-Hwan

src/App.js

@@ -3,7 +3,7 @@ import LottoVendingMachine from "./LottoVendingMachine.js";
 class App {
   async run() {
     const LottoVM = new LottoVendingMachine();
-    LottoVM.run();
+    await LottoVM.run();
   }
 }