Fix 'get_absolute_url()' refer to url
Fix 'get_absolute_url()' refer to url

hyesun03/k-board,guswnsxodlf/k-board,cjh5414/kboard,kboard/kboard,cjh5414/kboard,hyesun03/k-board,kboard/kboard,kboard/kboard,hyesun03/k-board,guswnsxodlf/k-board,darjeeling/k-board,cjh5414/kboard,guswnsxodlf/k-board