Fix: use the correct error message if the player is not the owner of the island

Author: Lazerstricks

src/main/java/world/bentobox/bentobox/api/commands/island/IslandResetCommand.java

@@ -56,7 +56,7 @@ public boolean canExecute(User user, String label, List<String> args) {
             return false;
         }
         if (!getIslands().hasIsland(getWorld(), user.getUniqueId())) {
-            user.sendMessage("general.errors.no-island");
+            user.sendMessage("general.errors.not-owner");
             return false;
         }
         int resetsLeft = getPlayers().getResetsLeft(getWorld(), user.getUniqueId());