docs: update google_cloud_sql_mssql.ipynb (#29315)

arbitary -> arbitrary

docs/docs/integrations/document_loaders/google_cloud_sql_mssql.ipynb

@@ -385,7 +385,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "First we prepare an example table with non-default schema, and populate it with some arbitary data."
+    "First we prepare an example table with non-default schema, and populate it with some arbitrary data."
    ]
   },
   {