[Custom Attribute type] Corrected StorageSchema import (#2474)

Author: mnocon

code_samples/catalog/custom_attribute_type/src/Attribute/Percent/Storage/PercentStorageConverter.php

@@ -5,7 +5,7 @@
 namespace App\Attribute\Percent\Storage;
 
 use Ibexa\Contracts\ProductCatalog\Local\Attribute\StorageConverterInterface;
-use Ibexa\ProductCatalog\Local\Persistence\Legacy\Attribute\Boolean\StorageSchema;
+use Ibexa\ProductCatalog\Local\Persistence\Legacy\Attribute\Float\StorageSchema;
 use Webmozart\Assert\Assert;
 
 final class PercentStorageConverter implements StorageConverterInterface