use settings rather than hard coded number
use settings rather than hard coded number

Ixxy-Open-Source/django-linkcheck-old,DjangoAdminHackers/django-linkcheck,Ixxy-Open-Source/django-linkcheck-old,DjangoAdminHackers/django-linkcheck,claudep/django-linkcheck,AASHE/django-linkcheck,yvess/django-linkcheck,claudep/django-linkcheck