chore: apply suggestions

src/control_backend/agents/llm/llm_instructions.py

@@ -5,6 +5,8 @@ class LLMInstructions:
     It combines the base persona (Pepper robot) with dynamic norms and goals
     provided by the BDI system.
 
+    If no norms/goals are given it assumes empty lists.
+
     :ivar norms: A list of behavioral norms.
     :ivar goals: A list of specific conversational goals.
     """