reword misspelled spans to only the word. closes

Right now there is a bug with /** style doc comments, but /// doc comments work perfectly.


Just wanted to put this up to motivate me to try and do more later, because I am good for the night now :)

closes #7 
(Although I actually think it could be removed, since this new system of spans should mean that there's never any repeats: each word gets its own span.)