Changes mapping to default id mapping for better visibility

src/main/java/de/thm/arsnova/frag/jetzt/backend/controller/CommentController.java

@@ -27,7 +27,7 @@ public class CommentController extends AbstractEntityController {
     private static final String DELETE_BY_ROOM_MAPPING = POST_MAPPING + "byRoom";
     private static final String HIGHLIGHT_MAPPING = DEFAULT_ID_MAPPING + "/highlight";
     private static final String LOWLIGHT_MAPPING = DEFAULT_ID_MAPPING + "/lowlight";
-    private static final String COMMENT_ROLE = GET_MAPPING + "/role";
+    private static final String COMMENT_ROLE = DEFAULT_ID_MAPPING + "/role";
 
     private final CommentCommandHandler commandHandler;
     private final CommentService service;