Merge pull request #4239 from segmentio/promoter-dep-docs

Promoter deprecation note

Author: stayseesong

src/connections/destinations/catalog/promoter-io/index.md

@@ -2,6 +2,10 @@
 title: Promoter Destination
 id: 55b6983e0a20f4e22f0fb3da
 ---
+
+> warning "Promoter.io Deprecation"
+> The Promoter.io product was deprecated on January 31, 2023. The Segment Promoter Destination is no longer operational.
+
 ## Getting Started
 
 Once the Segment library is integrated with your service, add your Promoter API Key and enable Promoter in your Segment destinations page. You can find your API key in Promoter.io under **Accounts Settings > Segment Destination**.