fix in column name

src/engine/objects/ZoneTemplate.java

@@ -45,7 +45,7 @@ public class ZoneTemplate {
         this.max_blend = rs.getFloat("zone_max_blend");
         this.has_water = rs.getString("zone_has_water");
         this.sea_level = rs.getFloat("zone_sea_level");
-        this.has_terrain = rs.getString("zone_has_terrain");
+        this.has_terrain = rs.getString("zone_has_terrain_gen");
         this.terrain_type = rs.getString("terrain_type");
         this.terrain_max_y = rs.getFloat("terrain_max_y");
         this.terrain_image = rs.getInt("terrain_image");