fix

Signed-off-by: cutecutecat <junyuchen@tensorchord.ai>

.vitepress/config.mts

@@ -1,6 +1,7 @@
 import { defineConfig } from 'vitepress'
 
 import mathjax3 from 'markdown-it-mathjax3';
+import markdownItTextualUml from 'markdown-it-textual-uml'
 
 const customElements = ['mjx-container'];
 
@@ -12,6 +13,7 @@ export default defineConfig({
   markdown: {
     config: (md) => {
       md.use(mathjax3);
+      md.use(markdownItTextualUml);
     },
   },  
   sitemap: {

package.json

@@ -9,6 +9,7 @@
   },
   "dependencies": {
     "markdown-it-katex": "^2.0.3",
-    "markdown-it-mathjax3": "^4.3.2"
+    "markdown-it-mathjax3": "^4.3.2",
+    "markdown-it-textual-uml": "^0.17.1"
   }
-}
+}