Backport r60653:
Fix typo in docstring for Calendar.itermonthdays().
diff --git a/Lib/calendar.py b/Lib/calendar.py
index 0461523..3190b72 100644
--- a/Lib/calendar.py
+++ b/Lib/calendar.py
@@ -179,8 +179,8 @@
 
     def itermonthdays(self, year, month):
         """
-        Like itermonthdates(), but will yield day numbers tuples. For days
-        outside the specified month the day number is 0.
+        Like itermonthdates(), but will yield day numbers. For days outside
+        the specified month the day number is 0.
         """
         for date in self.itermonthdates(year, month):
             if date.month != month: