Update devcontainer.json (#75)

Author: onemec

.devcontainer/devcontainer.json

@@ -5,7 +5,7 @@
     // Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
     "image": "mcr.microsoft.com/devcontainers/python:1-3.11-bullseye",
     "features": {
-        "ghcr.io/devcontainers-contrib/features/cookiecutter:2": {}
+        "ghcr.io/devcontainers-extra/features/cookiecutter:2": {}
     },
 
     // Use 'postCreateCommand' to run commands after the container is created.