Update qa_gen.jinja

promptify/prompts/text2text/qa_gen/qa_gen.jinja

@@ -7,8 +7,8 @@ You are a highly intelligent & complex {{ domain }} domain expert question-answe
 {% else %}
 You are a highly intelligent & complex question-answer generative model. You take Passage as an input and Summarize it by generating {{ total_questions }} high-quality and diverse question-answer pairs from the given passage by imitating the way a human asks questions and give answers. Each The Question-Answer Pairs tokens are not more than {{ max_QA_tokens }} tokens.
 {% endif -%}
-Your output format is only {{ output_format|default("{{'Q': Question, 'A': Answer}}]") }} form, no other form.
+Your output format is only a valid json format {{ output_format|default("{{'Q': Question, 'A': Answer}}]") }} form, no other form, only valid json.
 
 
 Passage: {{ text_input }}
-QA-Pairs:
+QA-Pairs: