Fix style issues noted by Vale

doc/user/application_security/index.md

@@ -368,8 +368,8 @@ variables:
 
 ### Outdated security reports
 
-When a security report generated for a merge request becomes outdated, the merge request shows a warning
-message in the security widget and prompts you to take an appropriate action.
+When a security report generated for a merge request becomes outdated, the merge request shows a
+warning message in the security widget and prompts you to take an appropriate action.
 
 This can happen in two scenarios:
 
@@ -378,18 +378,18 @@ This can happen in two scenarios:
 
 #### Source branch is behind the target branch
 
-This means the most recent common ancestor commit between the target branch and the source branch is
-not the most recent commit on the target branch. This is by far the most common situation.
+A security report can be out of date when the most recent common ancestor commit between the
+target branch and the source branch is not the most recent commit on the target branch.
 
-In this case you must rebase or merge to incorporate the changes from the target branch.
+To fix this issue, rebase or merge to incorporate the changes from the target branch.
 
 ![Incorporate target branch changes](img/outdated_report_branch_v12_9.png)
 
 #### Target branch security report is out of date
 
-This can happen for many reasons, including failed jobs or new advisories. When the merge request shows that a
-security report is out of date, you must run a new pipeline on the target branch.
-You can do it quickly by following the hyperlink given to run a new pipeline.
+This can happen for many reasons, including failed jobs or new advisories. When the merge request
+shows that a security report is out of date, you must run a new pipeline on the target branch.
+Select **new pipeline** to run a new pipeline.
 
 ![Run a new pipeline](img/outdated_report_pipeline_v12_9.png)
 
@@ -406,6 +406,7 @@ Found errors in your .gitlab-ci.yml:
 ```
 
 This error appears when the included job's stage (named `test`) isn't declared in `.gitlab-ci.yml`.
+
 To fix this issue, you can either:
 
 - Add a `test` stage in your `.gitlab-ci.yml`.
@@ -439,12 +440,11 @@ All the security scanning tools define their stage, so this error can occur with
 
 ### Getting warning messages `… report.json: no matching files`
 
-This is often followed by the [error `No files to upload`](../../ci/pipelines/job_artifacts.md#error-message-no-files-to-upload),
-and preceded by other errors or warnings that indicate why the JSON report wasn't generated. Please
-check the entire job log for such messages. If you don't find these messages, retry the failed job
-after setting `SECURE_LOG_LEVEL: "debug"` as a
-[custom CI/CD variable](../../ci/variables/index.md#custom-cicd-variables).
-This provides useful information to investigate further.
+This message is often followed by the [error `No files to upload`](../../ci/pipelines/job_artifacts.md#error-message-no-files-to-upload),
+and preceded by other errors or warnings that indicate why the JSON report wasn't generated. Check
+the entire job log for such messages. If you don't find these messages, retry the failed job after
+setting `SECURE_LOG_LEVEL: "debug"` as a [custom CI/CD variable](../../ci/variables/index.md#custom-cicd-variables).
+This provides extra information to investigate further.
 
 ### Getting error message `sast job: config key may not be used with 'rules': only/except`
 
@@ -542,23 +542,24 @@ involve pinning to the previous template versions, for example:
   ```
 
 Additionally, we provide a dedicated project containing the versioned legacy templates.
-This can be useful for offline setups or anyone wishing to use [Auto DevOps](../../topics/autodevops/index.md).
+This can be used for offline setups or anyone wishing to use [Auto DevOps](../../topics/autodevops/index.md).
 
 Instructions are available in the [legacy template project](https://gitlab.com/gitlab-org/auto-devops-v12-10).
 
 #### Vulnerabilities are found, but the job succeeds. How can I have a pipeline fail instead?
 
-This is the current default behavior, because the job's status indicates success or failure of the analyzer itself.
-Analyzer results are displayed in the [job logs](../../ci/jobs/index.md#expand-and-collapse-job-log-sections),
-[Merge Request widget](#view-security-scan-information-in-merge-requests)
-or [Security Dashboard](security_dashboard/index.md).
+In these circumstances, that the job succeeds is the default behavior. The job's status indicates
+success or failure of the analyzer itself. Analyzer results are displayed in the
+[job logs](../../ci/jobs/index.md#expand-and-collapse-job-log-sections),
+[Merge Request widget](#view-security-scan-information-in-merge-requests) or
+[Security Dashboard](security_dashboard/index.md).
 
 ### Error: job `is used for configuration only, and its script should not be executed`
 
 [Changes made in GitLab 13.4](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/41260)
 to the `Security/Dependency-Scanning.gitlab-ci.yml` and `Security/SAST.gitlab-ci.yml`
 templates mean that if you enable the `sast` or `dependency_scanning` jobs by setting the `rules` attribute,
-they will fail with the error `(job) is used for configuration only, and its script should not be executed`.
+they fail with the error `(job) is used for configuration only, and its script should not be executed`.
 
 The `sast` or `dependency_scanning` stanzas can be used to make changes to all SAST or Dependency Scanning,
 such as changing `variables` or the `stage`, but they cannot be used to define shared `rules`.