Update Docs DAST isn't silently skipped

DAST is not skipped and should not skip when a
review app is missing. This change reflects that
in the documentation.

doc/topics/autodevops/index.md

@@ -535,18 +535,14 @@ in the first place, and thus not realize that it needs to re-apply the old confi
 
 > Introduced in [GitLab Ultimate][ee] 10.4.
 
-This is an optional step, since it requires a [review app](#auto-review-apps).
-If that requirement is not met, the job will be silently skipped.
-
 Dynamic Application Security Testing (DAST) uses the
 popular open source tool [OWASP ZAProxy](https://github.com/zaproxy/zaproxy)
 to perform an analysis on the current code and checks for potential security
 issues. The Auto DAST stage will be skipped on licenses other than Ultimate.
 
-Once the report is created, it's uploaded as an artifact which you can
-later download and check out.
-
-Any security warnings are also shown in the merge request widget. Read how
+Once the DAST scan is complete, any security warnings are shown
+on the [Security Dashboard](../../user/application_security/security_dashboard/index.md)
+and the Merge Request Widget. Read how
 [DAST works](../../user/application_security/dast/index.md).
 
 On your default branch, DAST scans an app deployed specifically for that purpose.