more small updates [ci skip]

docs/users-guide/13-sql-parameters.md

@@ -94,5 +94,5 @@ WHERE True
 
 ---
 
-## That’s it!
-If you still have questions, or want to share Metabase tips and tricks, head over to our [discussion board](http://discourse.metabase.com/). See you there!
+## Next: automated x-ray explorations
+Learn about how to easily and quickly see automatic explorations of your data with Metabase's powerful [x-ray feature](14-x-rays.md).

docs/users-guide/14-x-rays.md

@@ -67,5 +67,10 @@ If you come across an x-ray that's particularly interesting, you can save it as
 
 We're reworking the way we do things like time series growth analysis, which was present in past versions of x-rays. In the meantime, we've removed those previous x-rays, and will bring those features back in a more elegant and streamlined way in a future version of Metabase.
 
-## Need help?
+### Need help?
 If you still have questions about x-rays or comparisons, you can head over to our [discussion forum](http://discourse.metabase.com/). See you there!
+
+---
+
+## Next: setting up alerts
+Learn how to get notified when one of your questions meets or goal or has results with [alerts](15-alerts.md).

docs/users-guide/15-alerts.md

@@ -67,5 +67,7 @@ There are a few ways alerts can be stopped:
 - If a saved question that has an alert on it gets edited in such a way that the alert doesn't make sense anymore, the alert will get deleted. For example, if a saved question with a goal line alert on it gets edited, and the goal line is removed entirely, that alert will get deleted.
 - If a question gets archived, any alerts on it will be deleted.
 
+---
+
 ## That’s it!
 If you still have questions about using alerts, you can head over to our [discussion forum](http://discourse.metabase.com/). See you there!