Add useState semicolon (#5823)

src/content/reference/react/useState.md

@@ -7,7 +7,7 @@ title: useState
 `useState` is a React Hook that lets you add a [state variable](/learn/state-a-components-memory) to your component.
 
 ```js
-const [state, setState] = useState(initialState)
+const [state, setState] = useState(initialState);
 ```
 
 </Intro>