wrong generated <acronym>s #47

https://ruby-hacking-guide.github.io/class.html
In the "Compressed rb_singleton_class()" section, there is a line:

701      if (FL_TEST(RBASIC→klass, FL_SINGLETON) &&

However the correct one should be:

701      if (FL_TEST(RBASIC(obj)->klass, FL_SINGLETON) &&

(from http://i.loveruby.net/ja/rhg/book/class.html).

FL_TEST(<acronym title="obj"><span class="caps">RBASIC</span></acronym>

The html source shows that the obj term becomes part of an <acronym> tag, seems like wrong generated.