add information about Source Function usage

Author: spencerattick

src/connections/destinations/catalog/repeater/index.md

@@ -6,10 +6,12 @@ This destination is maintained by Segment and is not available to customers on t
 
 ## Getting Started
 
-The Repeater destination forwards events from a source back into another source, as though that event occurred in the second source.
+The Repeater destination forwards events from a source back into another source as though that event occurred in the second source.
 
 Events are not cached in the Repeater, so it only handles real-time events. You can specify multiple sources as Repeater destinations.
 
+If you need to send events to a Source Function, please use the [Webhooks (Actions)]([url](https://segment.com/docs/connections/destinations/catalog/actions-webhook/)) destination instead. The Repeater bypasses the code of a Source Function and sends data only to the write key. The Webhook destination will allow data to be sent through the Source Function code as expected.
+
 ## Configuration
 
 Add the Repeater as a destination for the source that you want to replicate events from.