bpo-41818: ++ termios versionadded markers. (GH-27987)

overlooked in #23686

Author: gpshead

Doc/library/termios.rst

@@ -80,6 +80,8 @@ The module defines the following functions:
    descriptor *fd*. Requires :const:`termios.TIOCGWINSZ` or
    :const:`termios.TIOCGSIZE`.
 
+   .. versionadded:: 3.11
+
 
 .. function:: tcsetwinsize(fd, winsize)
 
@@ -89,6 +91,8 @@ The module defines the following functions:
     (:const:`termios.TIOCGWINSZ`, :const:`termios.TIOCSWINSZ`);
     (:const:`termios.TIOCGSIZE`, :const:`termios.TIOCSSIZE`) to be defined.
 
+   .. versionadded:: 3.11
+
 
 .. seealso::