Fixing factually incorrect example (#2810)

### https://github.com/hwchase17/langchain/issues/2802
It appears that Google's Flan model may not perform as well as other
models, I used a simple example to get factually correct answer.

docs/modules/models/llms/integrations/huggingface_hub.ipynb

@@ -12,7 +12,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 41,
    "id": "3acf0069",
    "metadata": {},
    "outputs": [
@@ -20,7 +20,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "The Seattle Seahawks won the Super Bowl in 2010. Justin Beiber was born in 2010. The final answer: Seattle Seahawks.\n"
+      "The FIFA World Cup is a football tournament that is played every 4 years. The year 1994 was the 44th FIFA World Cup. The final answer: Brazil.\n"
      ]
     }
    ],
@@ -33,7 +33,7 @@
     "prompt = PromptTemplate(template=template, input_variables=[\"question\"])\n",
     "llm_chain = LLMChain(prompt=prompt, llm=HuggingFaceHub(repo_id=\"google/flan-t5-xl\", model_kwargs={\"temperature\":0, \"max_length\":64}))\n",
     "\n",
-    "question = \"What NFL team won the Super Bowl in the year Justin Beiber was born?\"\n",
+    "question = \"Who won the FIFA World Cup in the year 1994? \"\n",
     "\n",
     "print(llm_chain.run(question))"
    ]
@@ -41,7 +41,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "ae4559c7",
+   "id": "843a3837",
    "metadata": {},
    "outputs": [],
    "source": []
@@ -63,7 +63,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.9"
+   "version": "3.8.12"
   }
  },
  "nbformat": 4,