add video and fix filename for md

docs/.vitepress/config.mts

@@ -26,6 +26,26 @@ export default defineConfig({
       { icon: 'github', link: 'https://github.com/vuejs/vitepress' }
     ]
   },
+  markdown: {
+    image: {
+      lazyLoading: true,
+    },
+    config(md) {
+      md.renderer.rules.image = function (tokens, idx, options, env, slf) {
+        const token = tokens[idx];
+
+        // Get the alt if it exists
+        const alt = token.attrGet('alt') || token.content || '';
+
+        // Fill the title attribute with the alt if it exists
+        if (!token.attrGet('title')) {
+          token.attrSet('title', alt);
+        }
+
+        return slf.renderToken(tokens, idx, options)
+      }
+    }
+  },
   vite: {
     clearScreen: false,
     server: {