Update cleanrepo.yml

Author: sbreingold-ms

.github/workflows/cleanrepo.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           function: "FindOrphanedArticles"
           docfx_directory: "."
-          target_directory: "."
+          target_directory: "defender"
           url_base_path: "/dotnet"
 
       # Create the PR for the work done by the "clean repo" tool