#223 - Fix code scanning alert - Missing Override annotation

- add missing @OverRide annotation to DirectBrokerClient.getSiteName

src/main/java/de/numcodex/feasibility_gui_backend/query/broker/direct/DirectBrokerClient.java

@@ -78,6 +78,7 @@ public List<String> getResultSiteIds(String brokerQueryId) throws QueryNotFoundE
     return findQuery(brokerQueryId).hasResult() ? Collections.singletonList(SITE_ID_LOCAL) : Collections.emptyList();
   }
 
+  @Override
   public String getSiteName(String siteId) throws SiteNotFoundException {
     if (SITE_ID_LOCAL.equals(siteId)) {
       return SITE_NAME_LOCAL;