fix(MetadataExtractorV1): store file's open license id in metadata

AoU-ResourceServerCommon/src/main/java/ch/unige/aou/service/metadata/MetadataExtractorV1.java

@@ -174,7 +174,7 @@ public class MetadataExtractorV1 extends MetadataExtractor {
       file.setSize(BigInteger.valueOf(documentFile.getFileSize()));
       file.setMimetype(documentFile.getMimetype());
       if (documentFile.getLicense() != null) {
-        file.setLicense(documentFile.getLicense().getResId());
+        file.setLicense(documentFile.getLicense().getOpenLicenseId());
       }
       if (documentFile.getEmbargoEndDate() != null) {
         Embargo embargo = new Embargo();