diff --git a/website/docs/guides/docs/sidebar/multiple-sidebars.md b/website/docs/guides/docs/sidebar/multiple-sidebars.md
index d328069e70..831b0ce20a 100644
--- a/website/docs/guides/docs/sidebar/multiple-sidebars.md
+++ b/website/docs/guides/docs/sidebar/multiple-sidebars.md
@@ -116,7 +116,7 @@ The pagination label by default is the sidebar label. You can use the front matt
 
 ## The `ref` item {#sidebar-item-ref}
 
-The `ref` type is identical to the [`doc` type](./items.mdx#sidebar-item-doc) in every way, except that it doesn't participate in generating navigation metadata. It only registers itself as a link. When [generating pagination](#generating-pagination) and [displaying sidebar](#sidebar-association), `ref` items are completely ignored.
+The `ref` type is identical to the [`doc` type](./items.md#sidebar-item-doc) in every way, except that it doesn't participate in generating navigation metadata. It only registers itself as a link. When [generating pagination](#generating-pagination) and [displaying sidebar](#sidebar-association), `ref` items are completely ignored.
 
 It is particularly useful where you wish to link to the same document from multiple sidebars. The document only belongs to one sidebar (the one where it's registered as `type: 'doc'` or from an autogenerated directory), but its link will appear in all sidebars that it's registered in.