add id and remove hidden frontmatter

Author: Thomas Gilbert

src/connections/sources/catalog/cloud-apps/gwen/index.md

@@ -1,10 +1,8 @@
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 title: "GWEN Source"
-hidden: true
+id: vMEJCURfHh
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-## GWEN Source
-
 [GWEN](https://gwenplatform.com/?utm_source=segmentio&utm_medium=docs&utm_campaign=partners){:target="blank"} offers powerful gamification tools and insights to convert, engage, and retain users. With GWEN it has never been easier to understand your users behavior patterns and build better performing products with both speed and accuracy.
 
 This is an [Event Cloud Source](https://segment.com/docs/sources/#event-cloud-sources) which can not only export data into your Segment warehouse, but can also federate the exported data into your other enabled Segment Destinations.