Merge branch 'docs-ek-update-text-to-read-productivity' into 'master'

Update text: Cycle -> Productivity

See merge request gitlab-org/gitlab-ce!31830

doc/user/analytics/productivity_analytics.md

@@ -52,7 +52,7 @@ The following metrics and visualizations are available on a project or group lev
 
 ## Retrieving data
 
-Users can retrieve three months of data when they deploy Cycle Analytics for the first time.
+Users can retrieve three months of data when they deploy Productivity Analytics for the first time.
 
 To retrieve data for a different time span, run the following in the GitLab directory: