docs: add missing closing tag in AFCL documentation

Author: NoOne7135

adminforth/documentation/docs/tutorial/03-Customization/15-afcl.md

@@ -996,6 +996,7 @@ any of native settings to `options` prop. Here we will only show some basics.
         }
 //diff-add
       }
+//diff-add
     }
   }"
 />