Update tot.ipynb (#8387)

Spelling error fix

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docs/extras/use_cases/graph/tot.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Tree of Thouht (ToT) example\n",
+    "# Tree of Thought (ToT) example\n",
     "\n",
     "The Tree of Thought (ToT) is a chain that allows you to query a Large Language Model (LLM) using the Tree of Thought technique. This is based on the papaer [\"Large Language Model Guided Tree-of-Thought\"](https://arxiv.org/pdf/2305.08291.pdf)"
    ]