fix(unit2): fix typo in system message prompt

unit2/langgraph/agent.ipynb

@@ -177,7 +177,7 @@
     "    Divide a and b\n",
     "\"\"\"\n",
     "    image = state[\"input_file\"]\n",
-    "    sys_msg = SystemMessage(content=f\"You are an helpful agent that can analyse some images and run some computatio without provided tools :\\n{textual_description_of_tool} \\n You have access to some otpional images. Currently the loaded images is : {image}\")\n",
+    "    sys_msg = SystemMessage(content=f\"You are an helpful agent that can analyse some images and run some computation with provided tools :\\n{textual_description_of_tool} \\n You have access to some otpional images. Currently the loaded images is : {image}\")\n",
     "\n",
     "    return {\"messages\": [llm_with_tools.invoke([sys_msg] + state[\"messages\"])], \"input_file\": state[\"input_file\"]}"
    ],