Update book/chapters/web-application-interface.dita
Update book/chapters/web-application-interface.dita

Now it's easier to see that `application` is unchanged
maxigit/yesodweb.com-content,mlitchard/lambdaweb.com-content,wolftune/yesodweb.com-content,wolftune/yesodweb.com-content,maxigit/yesodweb.com-content