added policy age issue

policy_analyser/prompts/health/rules.txt

@@ -16,6 +16,7 @@ Extract the following data points from the policy document and apply rules on th
 - "Restoration_Benefit" : if sum insured is restored after it gets exhausted
 - "Preventive_Annual_Health_Checkup" : if free annual health checkup is covered
 - "Ambulance_Cover" : cover on ambulance charges of hospitalization
+- "Policy_Age" : duration of policu, policy end date - policy start date
 
 IF Insured_Address_City in Top_Cities:
     Is_Top_City = true