fix(workshop): promote path-split headings from #### to ### in step 12 (#1325)

* Initial plan

* fix: promote #### path headings to ### in 12-test-and-iterate.md

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot

workshop/12-test-and-iterate.md

@@ -18,15 +18,15 @@ You'll trigger your daily-status workflow manually, read the resulting issue com
 
 Choose the path that matches how you want to trigger the run.
 
-#### Terminal path — trigger with `gh aw`
+### Terminal path — trigger with `gh aw`
 
 If you already have CLI trigger permissions configured, you can trigger the same run from the terminal:
 
 ```bash
 gh aw run daily-status
 ```
 
-#### GitHub UI path — trigger from Actions (recommended)
+### GitHub UI path — trigger from Actions (recommended)
 
 Open your repository's **Actions** tab, select **Daily Repo Status**, then click **Run workflow** → **Run workflow**.