test: update schema path in playground (#14)

Author: Gerbuuun

playground/package.json

@@ -7,7 +7,7 @@
     "build": "vite build",
     "preview": "vite preview",
     "dev:ui": "vite dev",
-    "dev:zero-cache": "zero-cache-dev -p app/db/schema.ts",
+    "dev:zero-cache": "zero-cache-dev -p src/db/schema.ts",
     "dev:db-up": "docker compose --env-file .env -f ./docker/docker-compose.yml up",
     "dev:db-down": "docker compose --env-file .env -f ./docker/docker-compose.yml down",
     "dev:clean": "source .env && docker volume rm -f docker_zstart_pgdata && rm -rf \"${ZERO_REPLICA_FILE}\"*",