minor #2484 [TwigComponent] Use promoted properties in code sample (t…

…acman)

This PR was merged into the 2.x branch.

Discussion
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[TwigComponent] Use promoted properties in code sample

just looks a bit more modern

| Q             | A
| ------------- | ---
| Bug fix?      | no
| License       | MIT

Just a tiny tweak to the docs

Commits
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fa4e36a use promoted properties

src/TwigComponent/doc/index.rst

@@ -405,11 +405,8 @@ normal. This example assumes you have a ``Product`` Doctrine entity and
     #[AsTwigComponent]
     class FeaturedProducts
     {
-        private ProductRepository $productRepository;
-
-        public function __construct(ProductRepository $productRepository)
+        public function __construct(private ProductRepository $productRepository)
         {
-            $this->productRepository = $productRepository;
         }
 
         public function getProducts(): array