docs: add dark class (#1836)

* docs: add dark class

* docs: fix ex height

Author: shinokada

src/routes/docs-examples/extend/tags/Default.svelte

@@ -9,7 +9,7 @@
 <form>
   <Tags class="mt-5 mb-3" bind:value={tags} />
   {#if tags.length > 0}
-    <pre>{JSON.stringify(tags, null, 2)}</pre>
+    <pre class="dark:text-white">{JSON.stringify(tags, null, 2)}</pre>
   {/if}
   <Button onclick={handleClick}>Submit</Button>
 </form>

src/routes/docs/extend/tags.md

@@ -35,7 +35,7 @@ Import the `Tags` component in a script tag.
 
 ## Input Props
 
-```svelte example class="h-40"
+```svelte example
 {#include InputProps.svelte}
 ```