Update according PR's changes

Author: yceruto

validation/sequence_provider.rst

@@ -429,7 +429,7 @@ Here's how you can achieve this:
 
             public static function loadValidatorMetadata(ClassMetadata $metadata): void
             {
-                $metadata->setGroupProviderClass(UserGroupProvider::class);
+                $metadata->setGroupProvider(UserGroupProvider::class);
                 $metadata->setGroupSequenceProvider(true);
                 // ...
             }