Update README.md

Co-authored-by: Gavin Barron <[email protected]>

Author: lramosvea

README.md

@@ -94,7 +94,7 @@ The following sample applications are also available:
 
 ### Update Schedule
 
-The Microsoft Graph .NET Client Library is scheduled to be updated during the week of the second and fourth Tuesday of each month
+The Microsoft Graph .NET Client Library is scheduled to be updated during the second and fourth week of each month
 
 ### Upgrading from v1