service/email.md

@@ -608,7 +608,9 @@ This procedure is DEPRECATED. Hosts MUST be configured with Puppet
 
  10. [test outgoing mail](#testing-outgoing-mail):
 
-         echo "this is a test email" | mail -r postmaster@torproject.org -s 'test email from anarcat' -- check-auth@verifier.port25.com
+     ```
+     echo "this is a test email" | mail -r postmaster@torproject.org -s 'test email from anarcat' -- check-auth@verifier.port25.com
+     ```
 
 [tpo/tpa/team#40981]: https://gitlab.torproject.org/tpo/tpa/team/-/issues/40981
 [tpo/tpa/team#40988]: https://gitlab.torproject.org/tpo/tpa/team/-/issues/40988