update dwt faq link to relative path

Author: lyzhang0113

index.md

@@ -56,7 +56,7 @@ Select a product below to browse its FAQs.
 <div class="faq-grid">
 
   <!-- Dynamic Web TWAIN -->
-  <a class="faq-tile" href="https://www.dynamsoft.com/web-twain/docs/faq/" aria-label="Dynamic Web TWAIN FAQs">
+  <a class="faq-tile" href="/web-twain/docs/faq/" aria-label="Dynamic Web TWAIN FAQs">
     <h2>🖨️ Dynamic Web TWAIN</h2>
     <p>Image viewing and editing, UI customization, security, and error troubleshooting.</p>
   </a>