Merge branch 'docs-sast-edits' into 'master'

Edits to SAST intro

See merge request gitlab-org/gitlab!26711

doc/user/application_security/sast/index.md

@@ -17,10 +17,11 @@ to learn how to protect your organization.
 If you are using [GitLab CI/CD](../../../ci/README.md), you can analyze your source code for known
 vulnerabilities using Static Application Security Testing (SAST).
 
-You can take advantage of SAST by either [including the CI job](#configuration) in
-your existing `.gitlab-ci.yml` file or by implicitly using
-[Auto SAST](../../../topics/autodevops/index.md#auto-sast-ultimate)
-that is provided by [Auto DevOps](../../../topics/autodevops/index.md).
+You can take advantage of SAST by doing one of the following:
+
+- [Including the CI job](#configuration) in your existing `.gitlab-ci.yml` file.
+- Implicitly using [Auto SAST](../../../topics/autodevops/index.md#auto-sast-ultimate) provided by
+  [Auto DevOps](../../../topics/autodevops/index.md).
 
 GitLab checks the SAST report, compares the found vulnerabilities between the
 source and target branches, and shows the information right on the merge request.
@@ -91,12 +92,14 @@ The Java analyzers can also be used for variants like the
 
 ## Configuration
 
-For GitLab 11.9 and later, to enable SAST, you must
-[include](../../../ci/yaml/README.md#includetemplate) the
-[`SAST.gitlab-ci.yml` template](https://gitlab.com/gitlab-org/gitlab/blob/master/lib/gitlab/ci/templates/Security/SAST.gitlab-ci.yml)
-that's provided as a part of your GitLab installation.
-For GitLab versions earlier than 11.9, you can copy and use the job as defined
-that template.
+NOTE: **Note:**
+You don't have to configure SAST manually as shown in this section if you're using [Auto SAST](../../../topics/autodevops/index.md#auto-sast-ultimate)
+provided by [Auto DevOps](../../../topics/autodevops/index.md).
+
+For GitLab 11.9 and later, to enable SAST you must [include](../../../ci/yaml/README.md#includetemplate)
+the [`SAST.gitlab-ci.yml` template](https://gitlab.com/gitlab-org/gitlab/blob/master/lib/gitlab/ci/templates/Security/SAST.gitlab-ci.yml)
+that is provided as a part of your GitLab installation. For GitLab versions earlier than 11.9, you
+can copy and use the job as defined that template.
 
 Add the following to your `.gitlab-ci.yml` file:
 
@@ -448,8 +451,9 @@ the report JSON unless stated otherwise. Presence of optional fields depends on
 
 ## Secret detection
 
-GitLab is also able to detect secrets and credentials that have been unintentionally pushed to the repository.
-For example, an API key that allows write access to third-party deployment environments.
+GitLab is also able to detect secrets and credentials that have been unintentionally pushed to the
+repository (for example, an API key that allows write access to third-party deployment
+environments).
 
 This check is performed by a specific analyzer during the `sast` job. It runs regardless of the programming
 language of your app, and you don't need to change anything to your