Fix prettier dev container feature

Author: Jimver

.devcontainer/devcontainer.json

@@ -4,7 +4,9 @@
   "postCreateCommand": "npm install",
   "customizations": {
     "codespaces": {
-      "openFiles": ["README.md"]
+      "openFiles": [
+        "README.md"
+      ]
     },
     "vscode": {
       "extensions": [
@@ -36,6 +38,6 @@
   },
   "features": {
     "ghcr.io/devcontainers/features/github-cli:1": {},
-    "ghcr.io/devcontainers-contrib/features/prettier:1": {}
+    "ghcr.io/devcontainers-community/npm-features/prettier:1": {}
   }
 }