Update hook descriptions

snippets/useComponentDidMount.md

@@ -3,16 +3,17 @@ title: useComponentDidMount
 tags: hooks,effect,beginner
 ---
 
-A hook that executes a callback immediately after a component is mounted.
+Executes a callback immediately after a component is mounted.
 
-- Use `React.useEffect()` with an empty array as the second argument to execute the provided callback only once when the component is mounted.
+- Use `useEffect()` with an empty array as the second argument to execute the provided callback only once when the component is mounted.
+- Behaves like the `componentDidMount()` lifecycle method of class components.
 
 ```jsx
 const useComponentDidMount = onMountHandler => {
   React.useEffect(() => {
-    onMountHandler()
+    onMountHandler();
   }, []);
-}
+};
 ```
 
 ```jsx
@@ -20,7 +21,7 @@ const Mounter = () => {
   useComponentDidMount(() => console.log('Component did mount'));
 
   return <div>Check the console!</div>;
-}
+};
 
 ReactDOM.render(<Mounter />, document.getElementById('root'));
 ```