docs: use ADR-NNNN in the conflict example so the citation check does not resolve it (#70)

Author: lesnik512

docs/agents/domain.md

@@ -30,4 +30,4 @@ If the concept you need isn't in the glossary yet, that's a signal: either you'r
 
 If your output contradicts an existing ADR, surface it explicitly rather than silently overriding:
 
-> _Contradicts ADR-0007 (event-sourced orders), but worth reopening because…_
+> _Contradicts ADR-NNNN (event-sourced orders), but worth reopening because…_