docs: update schedule information for Python Client Library

Author: giannidhooge

README.md

@@ -207,7 +207,7 @@ By default a maximum of 100 rows are returned but in the response if odata_next_
 
 ### Update Schedule
 
-The Microsoft Graph .NET Client Library is scheduled to be updated during the second and fourth week of each month
+The Microsoft Graph Python Client Library is scheduled to be updated during the second and fourth week of each month
 
 ## Upgrading