fix: linter

Author: TorstenDittmann

apps/demo/src/lib/Fence.svelte

@@ -7,5 +7,5 @@
 
     const result = hljs.highlight(content, { language: language ?? 'shell' });
 </script>
-
+<!-- eslint-disable-next-line svelte/no-at-html-tags -->
 <pre><code class={`language-${language}`}>{@html result.value}</code></pre>