File resolver updates are missing from S3 Import documentation

[djimenez-kg]

If the file you're trying to import from the S3 Bucket doesn't exist in the local folder the import process will throw an error. This is due to a validation vendor/spryker/data-import/src/Spryker/Zed/DataImport/Business/Model/DataReader/FileResolver/FileResolver.php:63 that checks if the file exists in the file system.

The FileResolver.php file also needs to be overridden and replaced with a function to check whether the file exists in the S3 Bucket or not.