fix scene repository

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/SceneRepository.java

@@ -14,9 +14,9 @@ public interface SceneRepository extends CrudRepository<Scene, Long> {
      * @param username a User's username
      * @return an optional scene, empty if none found
      */
-    @Query("SELECT r FROM Room r JOIN r.user u WHERE r.id = ?1 AND u.username = ?2")
+    @Query("SELECT s FROM Scene s JOIN s.user u WHERE s.id = ?1 AND u.username = ?2")
     Optional<Scene> findByIdAndUsername(Long id, String username);
 
-    @Query("SELECT r FROM Room r JOIN r.user u WHERE u.username = ?1")
+    @Query("SELECT s FROM Scene s JOIN s.user u WHERE u.username = ?1")
     List<Scene> findByUsername(String username);
 }