Clarify update schedule wording in README

Author: lramosvea

README.md

@@ -166,7 +166,7 @@ For more detailed documentation, see:
 
 ## 5. Update Schedule
 
-The Microsoft Graph Go Client Library is scheduled to be updated during the week of the second and fourth Tuesday of each month
+The Microsoft Graph Go Client Library is scheduled to be updated during the second and fourth week of each month
 
 ## 6. Issues