create demo zone fix

prisma/schema.prisma

@@ -85,7 +85,6 @@ model Zone {
   width       Int
   height      Int
   tiles       Json
-  walls       Json
   zoneObjects ZoneObject[]
   characters  Character[]
   chats       Chat[]

src/app/repositories/ZoneRepository.ts

@@ -43,7 +43,7 @@ class ZoneRepository {
                     name: name,
                     width: width,
                     height: height,
-                    tiles: tiles,
+                    tiles: tiles
                 }
             });
         } catch (error: any) {
@@ -62,7 +62,7 @@ class ZoneRepository {
                     name: name,
                     width: width,
                     height: height,
-                    tiles: tiles,
+                    tiles: tiles
                 }
             });
         } catch (error: any) {