valid_from_timestamp missing default seconds

[vdvcoder]

Hello,

In the config file you have:

/*
* When this is activated, requests will be checked if
* form is submitted faster than this amount of seconds
*/
'valid_from_timestamp' => env('HONEYPOT_VALID_FROM_TIMESTAMP', true),

Because of the default value is true, the default amount of seconds is missing from the comment.

Thanks!