Update meilisync_mysql.mdx

Added "NOT PRODUCTION READY" disclaimer

guides/database/meilisync_mysql.mdx

@@ -7,7 +7,7 @@ description: Learn how to keep Meilisearch up to date with your MySQL database.
 
 Though Meilisearch is a database, it is not recommended you use it as your primary data store. Instead, you should use an external database to store your data and periodically synchronize it with Meilisearch.
 
-This guide teaches you to use [`meilisync`](https://github.com/long2ice/meilisync) to keep Meilisearch up to date with a MySQL database.
+This guide teaches you to use [`meilisync`](https://github.com/long2ice/meilisync) to keep Meilisearch up to date with a MySQL database. **Please be advised that meilisync is in its early developmental phase and is NOT PRODUCTION READY yet. You may encounter issues while interacting with it.**
 
 ## Requirements