Fix broken test

Author: jihchi

tests/App_test.res

@@ -7,5 +7,5 @@ testAsync("renders component without crashing", async t => {
   t->assertions(1)
   render(<App />)
   let _ = await screen->findByText("Hello Vite + React + ReScript!");
-  screen->getByText("counter is 0")->expect->toBeInTheDocument
+  screen->getByText("count is: 0")->expect->toBeInTheDocument
 })