[11.x] Fixes defer() function return type (laravel#52910)

src/Illuminate/Foundation/helpers.php

@@ -406,7 +406,7 @@ function decrypt($value, $unserialize = true)
      * @param  callable|null  $callback
      * @param  string|null  $name
      * @param  bool  $always
-     * @return \Illuminate\Foundation\Defer\DeferredCallback
+     * @return \Illuminate\Support\Defer\DeferredCallback
      */
     function defer(?callable $callback = null, ?string $name = null, bool $always = false)
     {