docs: update prerender options

docs/content/3.config.md

@@ -337,14 +337,41 @@ routeRules: {
 
 ### `prerender`
 
-Default: `{ crawlLinks: false, ignore: [], routes: [] }`
+Default:
+
+```ts
+{
+  autoSubfolderIndex: true,
+  concurrency: 1,
+  interval: 0,
+  failOnError: false,
+  crawlLinks: false,
+  ignore: [],
+  routes: []
+}
+```
 
 Prerendered options. Any route specified will be fetched during the build and copied to the `.output/public` directory as a static asset.
 
 Any route that starts with a prefix listed in `ignore` will be ignored.
 
 If `crawlLinks` option is set to `true`, nitro starts with `/` by default (or all routes in `routes` array) and for HTML pages extracts `<a>` tags and prerender them as well.
 
+You can set `failOnError` option to `true` to stop the CI when an error if Nitro could not prerender a route.
+
+The `interval` and `concurrency` options lets you control the speed of pre-rendering, can be useful to avoid hitting some rate-limit if you call external APIs.
+
+Set `autoSubfolderIndex` lets you control how to generate the files in the `.output/public` directory:
+
+```bash
+# autoSubFolderIndex: true (default)
+/about -> .output/public/about/index.html
+# autoSubFolderIndex: false
+/about -> .output/public/about.html
+```
+
+This option is useful when your hosting provider does not give you an option regarding the trailing slash.
+
 ## Directories
 
 ### `rootDir`