docs(tutorials): fix serverless iam example

Author: Brooke-white

tutorials/001 - Connecting to Amazon Redshift.ipynb

@@ -547,6 +547,7 @@
     "\n",
     "with redshift_connector.connect(\n",
     "        iam=True,\n",
+    "        host='mytest_workgroup.123456789012.us-west-1.redshift-serverless.amazonaws.com',\n",
     "        database='dev',\n",
     "        access_key_id='my_aws_access_key_id',\n",
     "        secret_access_key='my_aws_secret_access_key',\n",