docs(dev): Fix code sample for vanilla JS (#3836)

* Fix code sample for vanilla JS

The .append method of elements takes plain text, not HTML. This updates the code to use .insertAdjacentHTML instead.

* Update createLabCodeExamples.ts

* fix(site): update createCodeExamples.ts vanilla JS code example

* Update createLabCodeExamples.ts

* Update createCodeExamples.ts

* Update createCodeExamples.ts

---------

Co-authored-by: Karsa <contact@karsa.org>

docs/.vitepress/lib/codeExamples/createLabCodeExamples.ts

@@ -10,10 +10,11 @@ type CodeExampleType = {
 const getIconCodes = (): CodeExampleType => {
   return [
     {
-      language: 'js',
+      language: 'html',
       title: 'Vanilla',
       code: `\
-import { createIcons, icons } from 'lucide';
+<script>
+import { createIcons } from 'lucide';
 import { $CamelCase } from '@lucide/lab';
 
 createIcons({
@@ -21,8 +22,9 @@ createIcons({
     $CamelCase
   }
 });
+</script>
 
-document.body.append('<i data-lucide="$Name"></i>');\
+<i data-lucide="$Name"></i>\
   `,
     },
     {