Update faq.yml

Author: L3vin

articles/applied-ai-services/metrics-advisor/faq.yml

@@ -66,6 +66,7 @@ sections:
           
           | Granularity(min) |	Retention(day) |
           |------------------| ------------------|
+          | 1 | 6.94 |
           |  5 | 34.72|
           | 15 | 104.1|
           | 60(=hourly) | 416.67 |