Better code sample for strict manifest

Author: GromNaN

components/asset.rst

@@ -173,13 +173,12 @@ not listed in the manifest::
     use Symfony\Component\Asset\Package;
     use Symfony\Component\Asset\VersionStrategy\JsonManifestVersionStrategy;
 
-    // The value of $strict can be specific per environment "true" for debugging and "false" for stability.
+    // The value of $strict can be specific per environment: "true" for debugging and "false" for stability.
     $strict = true;
-    // assumes the JSON file above is called "rev-manifest.json"
-    $package = new Package(new JsonManifestVersionStrategy(__DIR__.'/rev-manifest.json'), $strict);
+    $package = new Package(new JsonManifestVersionStrategy(__DIR__.'/manifest.json'), $strict);
 
-    echo $package->getUrl('not-found.css');
-    // error:
+    echo $package->getUrl('css/other.css');
+    // error: Asset "css/other.css" not found in manifest "/path/to/manifest.json".
 
 .. versionadded:: 5.2