Update test-connections.md

Update FAQ to include this feature is not available for Data Lakes

Author: t2b2015

src/connections/test-connections.md

@@ -56,3 +56,7 @@ The Event Tester is only accessible to users with write access in their Segment
 **The Event Tester experienced an error when sending my event. Why did this happen?**
 
 If you experience an error, [let Segment know](mailto:[email protected]) and the Segment team will help you troubleshoot the issue.
+
+**Is this feature available for Datalakes ?**
+
+No, currently Event Tester is not available for Datalakes.