Share design docs linked from fileoverview

[stringham]

In https://github.com/google/closure-library/blob/master/closure/goog/module/loader.js there is a file overview which says:

/**
 *
 * @fileoverview This class supports the dynamic loading of compiled
 * javascript modules at runtime, as described in the designdoc.
 *
 *   <http://go/js_modules_design>
 *
 */

and I'd like to get more information about how this works, but don't have access to the design doc. Is it possible to update this to be a publicly accessible url?

There are many other instances of http://go/* urls in this project and it may be worth considering updating them to be public urls when appropriate.