Merge branch 'doc-update-deploy-boards-states' into 'master'

Doc update deploy board instances states

See merge request gitlab-org/gitlab!20941

doc/user/project/deploy_boards.md

@@ -14,7 +14,7 @@ With Deploy Boards you can gain more insight into deploys with benefits such as:
 
 - Following a deploy from the start, not just when it's done
 - Watching the rollout of a build across multiple servers
-- Finer state detail (Waiting, Deploying, Finished, Unknown)
+- Finer state detail (Succeeded, Running, Failed, Pending, Unknown)
 - See [Canary Deployments](canary_deployments.md)
 
 Here's an example of a Deploy Board of the production environment.