Fixed deprecation usage

Author: 4drian3d

docusaurus.config.ts

@@ -27,7 +27,11 @@ const config: Config = {
   trailingSlash: false,
 
   onBrokenLinks: 'throw',
-  onBrokenMarkdownLinks: 'warn',
+  markdown: {
+    hooks: {
+      onBrokenMarkdownLinks: 'warn',
+    },
+  },
 
   // Even if you don't use internationalization, you can use this field to set
   // useful metadata like html lang. For example, if your site is Chinese, you