MLA Format. Why did my professor mark wrong a title of an Article from the web when I did citation?

The title on the web article is whole capitalized "THE YEAR IN IDEAS; Even Blind People Can Draw." In the citation, my professor marked this article title wrong where it says "THE YEAR IN IDEAS." Should it be "The Year In Ideas; Even Blind People Can Draw"? but in the article title it all letters capitalized "THE YEAR IN IDEAS" Can I change the letters on the title? Or just my English Professor doesn't know how mla citation himself? Thank you.