docs: stable-kernel-rules: fix typo sent->send

Change 'sent' to 'send'

Signed-off-by: Tim Bird <tim.bird@sony.com>
Link: https://lore.kernel.org/r/SA3PR13MB63726A746C847D7C0919C25BFD162@SA3PR13MB6372.namprd13.prod.outlook.com


Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>