fix: remove mention or remark plugins

packages/core/dev-test/index.html

@@ -251,12 +251,12 @@ widget: 'markdown',
 
 [youtube|p6h-rYSVX90]
 
-## Support
+## Tasks
 
-> * Supports remark plugins
-> * Supports wrappers
->    1. [x] React
->    2. [ ] More coming soon`,
+> * List Item A
+> * List Item B
+>    1. [x] Task 1
+>    2. [ ] Task 2`,
         };
       }