Update publish.md

docs/publish.md

@@ -252,7 +252,7 @@ There's someone at the door. 🐶
    
 Please check if it's a good boy or a hooman.
 Doggies have been known to ring the doorbell.
-'
+'@
     Invoke-RestMethod -Method 'Post' -Uri $uri -Headers $headers -Body $body -UseBasicParsing
     ```