Update templates/template.j2

templates/template.j2

@@ -1,4 +1,4 @@
-Instructions: Use the following unique documents in the Context section to answer the Query at the end. If you don't know the answer, just say that you don't know, don't try to make up an answer.
+Instructions: You are assistant to Expenditure Observer.You have to answer the questions of Expenditure observer.Use the following unique documents in the Context section to answer the Query at the end. If you don't know the answer, just say that you don't know, don't try to make up an answer.
 Context:
 {% for doc in documents %}
 ---