Update index.md

Author: pwseg

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

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 [Appcues](https://www.appcues.com/?utm_source=segmentio&utm_medium=docs&utm_campaign=partners) adds an experience layer to your product so you can build user onboarding, NPS surveys, or feature announcements in minutes instead of weeks. The Appcues JavaScript Destination is open-source. You can browse the code [on GitHub](https://github.com/appcues/analytics.js-integration-appcues).
 
-To contribute to this page, visit [Segment’s documentation repository](https://github.com/segmentio/segment-docs/blob/develop/CONTRIBUTING.md).
-
 
 ## Getting Started