fix: make sticky TOC work for full scroll height and fix heading anchor links

app/src/Controllers/LicenceController.php

@@ -31,6 +31,7 @@ class LicenceController
         $converter = new CommonMarkConverter([
             'html_input' => 'strip',
             'heading_permalink' => [
+                'apply_id_to_heading' => true,
                 'id_prefix' => '',
                 'insert' => 'before',
                 'aria_hidden' => true,