Added an import to help with challenge (just need to add new ObjectId(), no need to import anything)

Author: dfreniche

javascript/30_insert.ipynb

@@ -120,6 +120,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "import { ObjectId } from \"npm:mongodb\";\n",
+    "\n",
     "const book = { _id:  };\n",
     "const cursor = await books.find(book);\n",
     "\n",