bpo-42955: Fix sys.module_names doc (GH-24329)

Replace versionchanged markup with versionadded.

diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index d536fc9322eb0c27c7e233c1a279c5bc294bd912..f187895410cd4f67e487a57a838edc8081be931a 100644 (file)
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -1077,7 +1077,7 @@ always available.
 
    See also the :attr:`sys.builtin_module_names` list.
 
-   .. versionchanged:: 3.10
+   .. versionadded:: 3.10
 
 
 .. data:: modules