Update src/prompts.py

src/prompts.py

@@ -245,7 +245,8 @@ STATA_PROMPT_TEMPLATE = {
 }
 CATEGORIZER_PROMPT_TEMPLATE = """\
 You are a query-routing classifier for a {domain} research chatbot.
-Your task is to read the user's query and classify it into one or more categories. List all applicable classes and return ONLY valid JSON.
+Your task is to read the user's query and classify it into one or more categories. Include all applicable classes in a list 
+even if it is a single category and return ONLY valid JSON.
 Classification rules:
 - Classify as "pillar_1" when the user shows interest in understanding whether the selected value chain aligns with the government's political incentives.
 - Classify as "pillar_2" when the user shows interest in understanding to what degree decisions are impacted by the lobbying of particular groups or by elite influence