fix: mention middleware option default in docstring (#240)

Co-authored-by: Jake Champion <[email protected]>

Author: serhalp

packages/vite-plugin/src/main.ts

@@ -9,7 +9,7 @@ import { fromWebResponse, toWebRequest } from './lib/reqres.js'
 export interface NetlifyPluginOptions extends Features {
   /**
    * Attach a Vite middleware that intercepts requests and handles them in the
-   * same way as the Netlify production environment.
+   * same way as the Netlify production environment (default: true).
    */
   middleware?: boolean
 }