Merge branch 'fix-ux-handbook-link' into 'master'

Fix UX handbook link in contribution guide

See merge request gitlab-org/gitlab-ce!19738

CONTRIBUTING.md

@@ -301,7 +301,7 @@ For guidance on UX implementation at GitLab, please refer to our [Design System]
 The UX team uses labels to manage their workflow.
 
 The  ~"UX" label on an issue is a signal to the UX team that it will need UX attention. 
-To better understand the priority by which UX tackles issues, see the [UX section](https://about.gitlab.com/handbook/ux/) of the handbook.
+To better understand the priority by which UX tackles issues, see the [UX section](https://about.gitlab.com/handbook/engineering/ux) of the handbook.
 
 Once an issue has been worked on and is ready for development, a UXer applies the ~"UX ready" label to that issue.