Show two-item except example in config template

Demonstrates YAML array syntax for users unfamiliar with it.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jcasimir

plugins/compound-engineering/skills/refresh/sync-reviewers.sh

@@ -37,6 +37,7 @@ if [ ! -f "$USER_CONFIG" ]; then
 #    path: .
 #    except:
 #      - reviewer-to-skip
+#      - another-reviewer-to-skip
 
 YAML
   # Append the sources from the default registry