Update factory.js

Document the `maxBodyLength` property on the `PutOptions` object. It will be passed through to `follow-redirects` in nodejs-environments, where it is the default axios backend.

See also those issues:
axios/axios#2696
axios/axios#1323

The option is documented here: https://www.npmjs.com/package/follow-redirects

source/factory.js

@@ -25,7 +25,8 @@ const NOOP = () => {};
  * Options for creating a resource
  * @typedef {UserOptions} PutOptions
  * @property {Boolean=} overwrite - Whether or not to overwrite existing files (default: true)
- * @property {Number=} maxContentLength - The maximum amount of bytes to upload (default: 10 MiB)
+ * @property {Number=} maxContentLength - The maximum amount of bytes to download (default: 10 MiB)
+ * @property {Number=} maxBodyLength - The maximum amount of bytes to upload (default: 10 MiB) (only in nodejs-environments)
  */
 
 /**