Update jetty.clj

[sdegutis]

No description provided.

[weavejester]

Thanks for the patch. However, you'll need to change the commit message and PR description to be more explanatory. As it stands, you have no description of what you're doing, and the commit message just tells me what file you're changing. Instead, consider something like:

Refactor run-jetty function for clarity

You also need to make sure your indentation is correct, and it might be better to drop the doto altogether:

  (let [server (create-server (dissoc options :configurator))]
    (.setHandler server (proxy-handler handler))
    (when-let [configurator (:configurator options)]
      (configurator server))