docs: add warning about dev mode (#6734)

Author: paco-valdez

docs/content/Deployment/Production-Checklist.mdx

@@ -20,7 +20,9 @@ deployment.
 
 When running Cube in production environments, make sure development mode is
 disabled both on API Instances and Refresh Worker. Running Cube in development
-mode in a production environment can lead to security vulnerabilities. You can
+mode in a production environment can lead to security vulnerabilities. 
+Enabling Development Mode in Cube Cloud is not recommended.
+Development Mode will expose your data to the internet. You can
 read more on the differences between [production and development mode
 here][link-cubejs-dev-vs-prod].