Add note linking to role in attribution

Author: ashton-huxtable

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

@@ -265,6 +265,9 @@ For example, an attribution event coming from an attribution partner would look
 }];
 ```
 
+> info ""
+> Attribution and install counts can differ between Segment and attribution providers like AppsFlyer. You can read more about this in our guide [Segment's Role in Attribution](https://segment.com/docs/guides/how-to-guides/segment-and-attribution/){:target="_blank"}
+
 ## Other Features
 
 ### Revenue Tracking