DOCS: format notebooks (#13371)

cookbook/multiagent_bidding.ipynb

@@ -24,11 +24,12 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "from langchain.prompts import PromptTemplate\n",
+    "from typing import Callable, List\n",
+    "\n",
     "import tenacity\n",
-    "from typing import List, Callable\n",
     "from langchain.chat_models import ChatOpenAI\n",
     "from langchain.output_parsers import RegexParser\n",
+    "from langchain.prompts import PromptTemplate\n",
     "from langchain.schema import (\n",
     "    HumanMessage,\n",
     "    SystemMessage,\n",