Fix typos in configure-github-advanced-security-features.md

Corrected minor typos in the advanced security features documentation.

Author: laurajjiang

docs/repos/security/configure-github-advanced-security-features.md

@@ -163,9 +163,7 @@ Dependency scanning is a pipeline-based scanning tool. Results are aggregated pe
 :::image type="content" source="media/dependency-one-click-enablement.png" lightbox="media/dependency-one-click-enablement.png" alt-text="Screenshot of dependency scanning one-click setup."::: 
 :::zone-end
 
-For more advanced set up or if you want to scan all branches, we recommend that you add the dependency scanning task to all the pipelines that you want scanned. See [Dependency scanning for GitHub Advanced Security for Azure DevOps](github-advanced-security-dependency-scanning-troubleshoot.md#manual-dependency-scanning-task-set-up) for more details.
-
---- 
+For more advanced setup or if you want to scan all branches, we recommend that you add the dependency scanning task to all the pipelines that you want scanned. See [Dependency scanning for GitHub Advanced Security for Azure DevOps](github-advanced-security-dependency-scanning-troubleshoot.md#manual-dependency-scanning-task-set-up) for more details.
 
 ## Set up code scanning
 
@@ -261,8 +259,6 @@ If you're running on a self-hosted agent, select the `Enable automatic CodeQL de
 
 To generate alerts, run your first scan with a pipeline with the code scanning tasks included.
 
---- 
-
 ## Set up pull request annotations 
 
 For both dependency scanning and code scanning, annotations automatically configure for pull requests where a build validation policy applies with dependency scanning and/or code scanning tasks included in your pipeline. For more information on configuring build validation policies, see [Build validation](../git/branch-policies.md#build-validation).