I created a windows version script (watchdog.bat) to vote down the watchdogs: https://slack-files.com/T0W1W8KTK-F89LNG53M-69e44835ff
You can try, it's plain text, copy to a text file and name as like watchdog.bat.
Then you can configure a scheduled task (use windows Task Scheduler) to run it (run it at the same directory as terracoin-cli) every hour or so.