chore: slim down comment on shields section (#55)

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

Author: Jdubrick

lightspeed-core-configs/lightspeed-stack.yaml

@@ -73,10 +73,7 @@ conversation_cache:
     db_path: '/tmp/cache.db'
 customization:
   profile_path: '/app-root/rhdh-profile.py'
-# LCORE-owned safety shields (not Llama Stack / OGX Safety API resources).
-# Listed via GET /v1/shields; selected per request with optional shield_ids.
-# Opt-in: set ENABLE_VALIDATION=question_validity (OGX skips the entry when
-# provider_id resolves to __disabled__). See docs/CONTRIBUTING.md.
+# Opt-in: set ENABLE_VALIDATION=question_validity. Entry skipped when provider_id resolves to __disabled__.
 shields:
   - name: lightspeed_question_validity
     provider_id: ${env.ENABLE_VALIDATION:=__disabled__}