bpo-37478: Specify possible exceptions for os.chdir() (GH-14611)

diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 6e8df88..760c05c 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -1599,6 +1599,9 @@
    This function can support :ref:`specifying a file descriptor <path_fd>`.  The
    descriptor must refer to an opened directory, not an open file.
 
+   This function can raise :exc:`OSError` subclasses such as
+   :exc:`FileNotFoundError`, :exc:`PermissionError`, and :exc:`NotADirectoryError`.
+
    .. versionadded:: 3.3
       Added support for specifying *path* as a file descriptor
       on some platforms.