fix: video

Author: doyoonkim12345

docs/docs/guide/1.gettingStarted/1.introduction.mdx

@@ -1,7 +1,8 @@
+import { normalizeImagePath } from 'rspress/runtime';
 # Introduction
 
 <video controls width="100%">
-  <source src="/example.mp4" type="video/mp4" />
+  <source src={normalizeImagePath("/example.mp4")} type="video/mp4" />
   Your browser does not support the video tag.
 </video>