fix: colab auth import

Author: jamescalam

docs/pinecone-quickstart.ipynb

@@ -81,7 +81,7 @@
         "import os\n",
         "\n",
         "if not os.environ.get(\"PINECONE_API_KEY\"):\n",
-        "    from pinecone_notebooks import Authenticate\n",
+        "    from pinecone_notebooks.colab import Authenticate\n",
         "    Authenticate()\n",
         "\n",
         "api_key = os.environ.get(\"PINECONE_API_KEY\")"