fix to import line and GCS bucket (#147)

Author: polong-lin

Diff for: language/examples/tuning/getting_started_tuning.ipynb

@@ -282,7 +282,7 @@
    },
    "outputs": [],
    "source": [
-    "if BUCKET_NAME == \"\" or BUCKET_NAME is None or BUCKET_NAME == \"[your-bucket-name]\":\n",
+    "if BUCKET_NAME == \"\" or BUCKET_NAME is None or BUCKET_NAME == \"<your-bucket-name>\":\n",
     "    BUCKET_NAME = \"vertex-\" + UUID\n",
     "    BUCKET_URI = f\"gs://{BUCKET_NAME}\""
    ]
@@ -373,7 +373,7 @@
     "from sklearn.model_selection import train_test_split\n",
     "import numpy as np\n",
     "\n",
-    "from vertexai.language_models import TextGenerationModel\n",
+    "from vertexai.preview.language_models import TextGenerationModel\n",
     "from google.cloud import aiplatform\n",
     "from google.cloud import bigquery"
    ]