demos: fix dependency

demos/package.json

@@ -10,6 +10,7 @@
   "dependencies": {
     "d3": "^7.0.1",
     "remixicon": "^2.5.0",
+    "shiki": "^0.9.11",
     "simplify-js": "^1.2.4",
     "y-indexeddb": "^9.0.6",
     "y-webrtc": "^10.2.0",
@@ -28,7 +29,6 @@
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "sass": "^1.40.1",
-    "shiki": "^0.9.11",
     "tailwindcss": "^2.2.15",
     "typescript": "^4.4.3",
     "uuid": "^8.3.2",