Add pointers to create_react_agent in how-tos where appropriate (#464)

examples/chat_agent_executor_with_function_calling/dynamically-returning-directly.ipynb

@@ -11,7 +11,15 @@
     "\n",
     "This examples builds off the base chat executor. It is highly recommended you learn about that executor before going through this notebook. You can find documentation for that example [here](./base.ipynb).\n",
     "\n",
-    "Any modifications of that example are called below with **MODIFICATION**, so if you are looking for the differences you can just search for that."
+    "Any modifications of that example are called below with **MODIFICATION**, so if you are looking for the differences you can just search for that.\n",
+    "\n",
+    "\n",
+    "<div class=\"admonition tip\">\n",
+    "    <p class=\"admonition-title\">Note</p>\n",
+    "    <p>\n",
+    "        In this how-to, we will create our agent from scratch to be transparent (but verbose). You can accomplish similar functionality using the <code>create_react_agent(model, tools=tool, interrupt_before=[\"agent\" | \"tools\"], interrupt_after=[\"agent\" | \"tools\"], checkpointer=checkpointer)</code> (<a href=\"https://langchain-ai.github.io/langgraph/reference/prebuilt/#create_react_agent\">API doc</a>) constructor. This may be more appropriate if you are used to LangChain’s <a href=\"https://python.langchain.com/v0.1/docs/modules/agents/concepts/#agentexecutor\">AgentExecutor</a> class.\n",
+    "    </p>\n",
+    "</div>    "
    ]
   },
   {