docs: correct typos in Italian words (#22606)

**Description**

Fix typos in Italian words.

docs/docs/how_to/example_selectors.ipynb

@@ -60,7 +60,7 @@
    "source": [
     "examples = [\n",
     "    {\"input\": \"hi\", \"output\": \"ciao\"},\n",
-    "    {\"input\": \"bye\", \"output\": \"arrivaderci\"},\n",
+    "    {\"input\": \"bye\", \"output\": \"arrivederci\"},\n",
     "    {\"input\": \"soccer\", \"output\": \"calcio\"},\n",
     "]"
    ]
@@ -133,7 +133,7 @@
     {
      "data": {
       "text/plain": [
-       "[{'input': 'bye', 'output': 'arrivaderci'}]"
+       "[{'input': 'bye', 'output': 'arrivederci'}]"
       ]
      },
      "execution_count": 39,
@@ -209,7 +209,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Translate the following words from English to Italain:\n",
+      "Translate the following words from English to Italian:\n",
       "\n",
       "Input: hand -> Output: mano\n",
       "\n",
@@ -222,7 +222,7 @@
     "    example_selector=example_selector,\n",
     "    example_prompt=example_prompt,\n",
     "    suffix=\"Input: {input} -> Output:\",\n",
-    "    prefix=\"Translate the following words from English to Italain:\",\n",
+    "    prefix=\"Translate the following words from English to Italian:\",\n",
     "    input_variables=[\"input\"],\n",
     ")\n",
     "\n",