another fix

winery/webapp/src/main/java/cz/muni/fi/pa165/winery/webapp/models/wineBottle/WineBottleUpsertViewModel.java

@@ -49,14 +49,14 @@ public class WineBottleUpsertViewModel extends ViewModelBase {
      * volume of bottle
      */
     @NotNull(message = "Cannot be empty")
-    @PositiveOrZero(message = "Has to be a non-negative number")
+    @Positive(message = "Has to be a positive number")
     private BigDecimal volume;
 
     /**
      * price of bottle
      */
     @NotNull(message = "Cannot be empty")
-    @PositiveOrZero(message = "Has to be a non-negative number")
+    @Positive(message = "Has to be a positive number")
     private BigDecimal price;
 
     /**