[Validator] Correct PHPDoc for Collection constructor

Author: yoeunes

Constraints/Collection.php

@@ -38,10 +38,10 @@ class Collection extends Composite
     public string $missingFieldsMessage = 'This field is missing.';
 
     /**
-     * @param array<string,Constraint>|null $fields             An associative array defining keys in the collection and their constraints
-     * @param string[]|null                 $groups
-     * @param bool|null                     $allowExtraFields   Whether to allow additional keys not declared in the configured fields (defaults to false)
-     * @param bool|null                     $allowMissingFields Whether to allow the collection to lack some fields declared in the configured fields (defaults to false)
+     * @param array<string,Constraint|list<Constraint>>|null $fields             An associative array defining keys in the collection and their constraints
+     * @param string[]|null                                  $groups
+     * @param bool|null                                      $allowExtraFields   Whether to allow additional keys not declared in the configured fields (defaults to false)
+     * @param bool|null                                      $allowMissingFields Whether to allow the collection to lack some fields declared in the configured fields (defaults to false)
      */
     #[HasNamedArguments]
     public function __construct(mixed $fields = null, ?array $groups = null, mixed $payload = null, ?bool $allowExtraFields = null, ?bool $allowMissingFields = null, ?string $extraFieldsMessage = null, ?string $missingFieldsMessage = null)