add docs

Author: native-api

Doc/using/cmdline.rst

@@ -351,6 +351,11 @@ Miscellaneous options
    (filename or built-in module) from which it is loaded.  When given twice
    (:option:`!-vv`), print a message for each file that is checked for when
    searching for a module.  Also provides information on module cleanup at exit.
+
+   .. versionadded:: 3.8
+      When running the :mod:`site` module, report the site-specific paths
+      and :file:`.pth` files being processed.
+
    See also :envvar:`PYTHONVERBOSE`.