ci: drop ticket reference from workflow comment

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: celine-runpod

.github/workflows/cd.yml

@@ -103,7 +103,7 @@ jobs:
           verbose: true
 
   # ──────────────────────────────────────────────
-  # Linear release tracking (SLS-171)
+  # Linear release tracking
   # ──────────────────────────────────────────────
 
   linear-sync: