Update index.html

Author: thinh-vu

docs/site/functions/market/index.html

@@ -147,8 +147,8 @@
 
 <!-- Add a panorama banner here -->
 <div style="width: 100%; overflow: hidden; position: relative;">
-  <a href="https://docs.vnstock.site/course/" style="display: block; width: 100%; height: 100%;">
-      <img src="https://raw.githubusercontent.com/thinh-vu/vnstock/beta/docs/docs/assets/images/python_chung_khoan_k6_vnstock.png" alt="Khai giảng khóa Python chứng khoán #6" style="width: 100%; height: 100%; object-fit: cover;">
+  <a href="https://vnstocks.com/docs/tai-lieu/migration-chuyen-doi-sang-vnstock3?utm_source=vnstock-legacy&utm_medium=announcement_bar" style="display: block; width: 100%; height: 100%;">
+      <img src="https://github.com/thinh-vu/vnstock/blob/legacy/docs/docs/assets/images/vnstock3-migration-notice.png?raw=true" alt="Vnstock3 Xin chào!" style="width: 100%; height: 100%; object-fit: cover;">
   </a>
 </div>
 
@@ -2311,4 +2311,4 @@ <h2 id="giao-dich-tu-doanh">🔐 Giao dịch tự doanh<a class="headerlink" hre
     <!-- End Google Tag Manager (noscript) -->
 
   <script>document$.subscribe(() => {const lightbox = GLightbox({"touchNavigation": true, "loop": false, "zoomable": true, "draggable": true, "openEffect": "zoom", "closeEffect": "zoom", "slideEffect": "slide"});})</script></body>
-</html>
+</html>