Microsoft's use of the 30 day warranty pattern (#399)

Author: arnom-ms

patterns/2-structured/30-day-warranty.md

@@ -48,6 +48,7 @@ In addition it helps to provide clear [contribution guidelines](./project-setup/
 
 - This was tried and proven successful at PayPal.
 - GitHub internally uses this pattern with a modified warranty timeline of 6 weeks.
+- Microsoft recommends this pattern as a principle - teams set their own specific time target matching their needs and confidence.
 
 ## Authors