Fix CDN path

package.json

@@ -19,7 +19,7 @@
     "clean": "rm -rf node_modules stamp-npm dist *.zip",
     "headless": "webpack --config webpack.headless.js",
     "nodeps": "webpack --config webpack.nodeps.js",
-    "cdn": "ASSET_PATH=https://cdn.conversejs.org/dist npm run dev && ASSET_PATH=https://cdn.conversejs.org/dist npm run build",
+    "cdn": "ASSET_PATH=https://cdn.conversejs.org/dist/ npm run dev && ASSET_PATH=https://cdn.conversejs.org/dist/ npm run build",
     "build": "webpack --config webpack.prod.js",
     "dev": "webpack --config webpack.dev.js",
     "watch": "webpack --watch --config webpack.dev.js",