I've fixed a usage example for String#include? that was not valid Ruby. This is my first attempt at submitting an issue or patch for Ruby, so please pardon any errors. Thank you!
Thanks, Charlie. While the shorthand is valid, the actual problem is that the question mark does not appear when viewing the generated documentation (screenshot: http://cl.ly/Pmx1). Is there a way to escape that character so it appears and makes the rendered docs valid?