[Orphaned Files Check] Improve content + readability of PR body (#53409)

Co-authored-by: Kevin Heis <[email protected]>

.github/workflows/orphaned-files-check.yml

@@ -91,14 +91,13 @@ jobs:
           git push origin $branchname
 
           body=$(cat <<-EOM
-            Found with the npm run find-orphaned-assets script.
-            The orphaned files workflow file .github/workflows/orphaned-files-check.yml
-            runs every Monday at 16:20 UTC / 8:20 PST.
-            The first responder should just spot-check some of the unused assets
-            to make sure they aren't referenced anywhere
-            and then approve and merge the pull request.
-            For more information, see [Doc: Orphaned Assets](https://github.com/github/docs-engineering/blob/main/docs/orphaned-assets.md)
-            and [Doc: Reusables CLI](https://github.com/github/docs-internal/tree/main/src/content-render/scripts/reusables-cli).
+            Found with the `npm run find-orphaned-assets` and `npm run -s reusables -- find unused` scripts.
+            
+            The orphaned files workflow file .github/workflows/orphaned-files-check.yml runs every Monday at 16:20 UTC / 8:20 PST.
+            
+            If you are the first responder, please spot check some of the unused assets to make sure they aren't referenced anywhere. Then, approve and merge the pull request.
+            
+            For more information, see [Doc: Orphaned Assets](https://github.com/github/docs-engineering/blob/main/docs/orphaned-assets.md) and [Doc: Reusables CLI](https://github.com/github/docs-internal/tree/main/src/content-render/scripts/reusables-cli).
           EOM
           )