Fix quickstart with a missing comma

Signed-off-by: Danny Chiao <[email protected]>

examples/quickstart/quickstart.ipynb

@@ -192,7 +192,7 @@
         "*   gcp: use BigQuery/Snowflake with Google Cloud Datastore/Redis\n",
         "*   aws: use Redshift/Snowflake with DynamoDB/Redis\n",
         "\n",
-        "Note that there are many other sources Feast works with, including Azure, Hive, Trino, and PostgreSQL via community plugins. See https://docs.feast.dev/getting-started/third-party-integrations for all supported datasources."
+        "Note that there are many other sources Feast works with, including Azure, Hive, Trino, and PostgreSQL via community plugins. See https://docs.feast.dev/getting-started/third-party-integrations for all supported datasources.",
         "\n",
         "A custom setup can also be made by following https://docs.feast.dev/v/master/how-to-guides/creating-a-custom-provider"
       ]