[Enhancement]: clarification in docs

[drewverlee]

What do you suggest?

The docs say:

You must have a... :module (shadow-cljs) for the :preloads and :closure-defines to take effect

However, there is no "module" keyword. There is a :modules e.g

{...
 :builds
   {:app
     {:target :browser
      ...
      :module-loader true
      :modules {:main  {:entries [my.app]}
                                   :extra {:entries [my.app.extra]
                        :depends-on #{:main}}}}}}
                        ```
                        
                        But what needs to be the value of that key then? it has to be a map, but what about inside that map.