Sync svelte docs (#1359)

sync svelte docs

Co-authored-by: svelte-docs-bot[bot] <196124396+svelte-docs-bot[bot]@users.noreply.github.com>

Author: github-actions[bot]

apps/svelte.dev/content/docs/svelte/98-reference/21-svelte-compiler.md

@@ -820,6 +820,7 @@ fragments?: 'html' | 'tree';
 <div class="ts-block-property-bullets">
 
 - <span class="tag">default</span> `'html'`
+- <span class="tag since">available since</span> v5.33
 
 </div>