Link to conceptual doc (#2641)

docs/docs/tutorials/tnt-llm/tnt-llm.ipynb

@@ -43,7 +43,7 @@
    "outputs": [],
    "source": [
     "%%capture --no-stderr\n",
-    "%pip install -U langgraph langchain_anthropic langsmith\n",
+    "%pip install -U langgraph langchain_anthropic langsmith langchain-community\n",
     "%pip install -U sklearn langchain_openai"
    ]
   },
@@ -632,7 +632,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "from langchain.cache import InMemoryCache\n",
+    "from langchain_community.cache import InMemoryCache\n",
     "from langchain.globals import set_llm_cache\n",
     "\n",
     "# Optional. If you are running into errors or rate limits and want to avoid repeated computation,\n",