Docs: Link to the contextlib.chdir context manager in the os.chdir docs (#153152)

Co-authored-by: Stan Ulbrych <stan@python.org>

Author: cmaloney

Doc/library/os.rst

@@ -2180,6 +2180,11 @@ features:
 
    .. audit-event:: os.chdir path os.chdir
 
+   .. seealso::
+
+      The :func:`contextlib.chdir` context manager, which changes the current
+      working directory on entering and restores the previous one on exit.
+
    .. versionchanged:: 3.3
       Added support for specifying *path* as a file descriptor
       on some platforms.