Update README.md

Author: erickzhao

config/makers/README.md

@@ -19,14 +19,14 @@ module.exports = {
       name: '@electron-forge/maker-zip',
       platforms: ['darwin', 'linux'],
       config: {
-        // the config is an object containing optios
+        // the config can be an object
       }
     },
     {
       name: '@electron-forge/maker-dmg',
-      platforms: ['darwin'],
       config: (arch) => ({
-        // can also be a function taking the currently built arch as a parameter and returning a config object, e.g.
+        // it can also be a function taking the currently built arch
+        // as a parameter and returning a config object, e.g.
       })
     }
   ]