Merge branch 'docs-sethgitlab-dast-ssot' into 'master'

Removed reference to project for DAST

See merge request gitlab-org/gitlab-ce!32601

doc/user/application_security/dast/index.md

@@ -134,7 +134,7 @@ variables:
 
 The DAST settings can be changed through environment variables by using the
 [`variables`](../../../ci/yaml/README.md#variables) parameter in `.gitlab-ci.yml`.
-These variables are documented in the [DAST README](https://gitlab.com/gitlab-org/security-products/dast#settings).
+These variables are documented in [available variables](#available-variables).
 
 For example: