Apply suggestions from code review

Co-authored-by: Sarah Rainsberger <[email protected]>

packages/astro/src/@types/astro.ts

@@ -1677,7 +1677,7 @@ export interface AstroUserConfig {
  * @version 4.15.0
  * @description
  *
- * When `i18n.fallback` is configured to avoid showing a 404 page for missing page routes, this option controls whether to [redirect](https://docs.astro.build/en/guides/routing/#redirects) to the fallback page, or to [rewrite](https://docs.astro.build/en/guides/routing/#rewrites) the fallback page's content in place.
+ * When [`i18n.fallback`](#i18nfallback) is configured to avoid showing a 404 page for missing page routes, this option controls whether to [redirect](https://docs.astro.build/en/guides/routing/#redirects) to the fallback page, or to [rewrite](https://docs.astro.build/en/guides/routing/#rewrites) the fallback page's content in place.
  * 
  * By default, Astro's i18n routing creates pages that redirect your visitors to a new destination based on your fallback configuration. The browser will refresh and show the destination address in the URL bar.
  *