Issue #22369: Change "context manager protocol" to "context management protocol".
diff --git a/Lib/mailbox.py b/Lib/mailbox.py
index 451f882..2eee76c 100644
--- a/Lib/mailbox.py
+++ b/Lib/mailbox.py
@@ -1980,7 +1980,7 @@
         return result
 
     def __enter__(self):
-        """Context manager protocol support."""
+        """Context management protocol support."""
         return self
 
     def __exit__(self, *exc):