Thank you very much for your comment. The top page was modified to the word "wtf" by a malicious user. Currently, all JavaScript input forms have been removed from the top page, so I think that it can be viewed normally. I haven't studied enough.
Thank you for your comment. The site I searched for was "http://url-wiki.com", not a note. I posted an article on how to use it in note, and I thought it would be easier to understand, but I'm sorry that it confused Hack News.