(docs) Update redirects page with info on hide-404-page setting (#1224)

Author: devalog

fern/products/docs/pages/customization/what-is-docs-yml.mdx

@@ -468,31 +468,31 @@ settings:
   The text to display in the searchbar.
 </ParamField>
 
-<ParamField path="settings.disable-search" type="boolean" required={false}>
+<ParamField path="settings.disable-search" type="boolean" required={false} default="false">
   If set to true, the searchbar will be disabled. Use this if you want to use a custom search solution.
 </ParamField>
 
-<ParamField path="settings.dark-mode-code" type="boolean" required={false}>
+<ParamField path="settings.dark-mode-code" type="boolean" required={false} default="false">
   If set to true, the code blocks will be displayed in dark mode, regardless of the selected theme.
 </ParamField>
 
-<ParamField path="settings.default-search-filters" type="boolean" required={false}>
-  By default, search will display results for pages across all products and versions. 
+<ParamField path="settings.default-search-filters" type="boolean" required={false} default="false">
+  By default (`false`), search will display results for pages across all products and versions. 
 
   If set to true, search will display results for pages within the current product and version.
 </ParamField>
 
-<ParamField path="settings.http-snippets" type="boolean" required={false}>
+<ParamField path="settings.http-snippets" type="boolean" required={false} default="false">
   If set to true, the HTTP snippets will be displayed in the API Reference.
 </ParamField>
 
-<ParamField path="settings.hide-404-page" type="boolean" required={false}>
+<ParamField path="settings.hide-404-page" type="boolean" required={false} default="false">
   If set to true, when a user navigates to a page that does not exist, they will be redirected to the home page.
 
   By default, a 404 page will be displayed.
 </ParamField>
 
-<ParamField path="settings.use-javascript-as-typescript" type="boolean" required={false}>
+<ParamField path="settings.use-javascript-as-typescript" type="boolean" required={false} default="false">
   If set to true, the TypeScript snippets will be displayed as JavaScript snippets in the API Reference.
 </ParamField>
 

fern/snippets/redirects.mdx

@@ -54,7 +54,12 @@ redirects:
     destination: / # Don't do this
 ```
 
-Instead, reach out to Fern to enable automatic homepage redirects, an internal setting that handles broken links without needing manual redirects.
+Instead, [enable automatic homepage redirects in your `docs.yml`](/docs/configuration/what-is-docs-yml#settings-configuration) to send broken links to your homepage rather than showing a 404 page:
+
+```yaml title="docs.yml"
+settings:
+  hide-404-page: true
+```
 
 </Accordion>
 <Accordion title="Versioning and redirects">