There are only 28 days in February (#18753)

Author: Chris Raynor

content/admin/overview/managing-billing-for-your-enterprise.md

@@ -26,7 +26,7 @@ For example, here are the costs for users with licenses on different dates.
 User | License dates | Counted days | Cost
 ---- | ------------ | ------- | -----
 @octocat | January 1 - January 31 | 31 | $39
-@robocat | February 1 - February 28 | 29 | $35.23
+@robocat | February 1 - February 28 | 28 | $35.23
 @devtocat  | January 15 - January 31 | 17 | $21.39
 @doctocat | January 1 - January 15 | 31 | $39
 @prodocat | January 7 - January 15 | 25 | $31.45