add link to concurrent devops

doc/user/instance_statistics/convdev.md

@@ -3,7 +3,8 @@
 > [Introduced][ce-30469] in GitLab 9.3.
 
 Conversational Development Index (ConvDev) gives you an overview of your entire
-instance's feature usage, from idea to production. It looks at your usage in the
+instance's adption of [Concurrent DevOps](https://about.gitlab.com/concurrent-devops/) from planing to monitoring, while 
+being able to manage and secure your across the entire lifecycle. It looks at your usage in the
 past 30 days, averaged over the number of active users in that time period. It also
 provides a lead score per feature, which is calculated based on GitLab's analysis
 of top performing instances, based on [usage ping data][ping] that GitLab has