Update untrack.mdx example

"const value = untrack(() => props.value)" is not a recommended pattern especially because the same could be achieved with "const value = props.value" which is also not a recommended pattern as shown in the following link -> https://docs.solidjs.com/concepts/components/props#destructuring-props.

Author: MattLysinger

src/routes/reference/reactive-utilities/untrack.mdx

@@ -18,13 +18,11 @@ description: >-
 
 Ignores tracking any of the dependencies in the executing code block and returns the value. This helper is useful when a certain `prop` will never update and thus it is ok to use it outside of the tracking scope.
 
-```tsx title="component.tsx"
+```tsx title="component.tsx" {4}
 import { untrack } from "solid-js";
 
 export function Component(props) {
-	const value = untrack(() => props.value);
-
-	return <div>{value}</div>;
+	return <div>{untrack(() => props.value)}</div>;
 }
 ```