Change the cron and color from red to yellow if broken links < 3

[amarouane-ABDELHAK]

The goal of this task is to update the business logic so that if there are fewer than 3 broken links, we display yellow (in the status page) ; if there are fewer than 5, we display orange, and red if there are more than 5. Additionally, the cron job for checking the links should run every other Wednesday.