fix comments feature

docs/index.html

@@ -43,6 +43,7 @@
   <script src="//cdn.jsdelivr.net/npm/prismjs@1/components/prism-bash.min.js"></script>
   <script src="//cdn.jsdelivr.net/npm/prismjs@1/components/prism-python.min.js"></script>
 
+  <script src="//cdn.jsdelivr.net/npm/docsify/lib/plugins/external-script.min.js"></script>
   <script src="https://utteranc.es/client.js"
         repo="[datawhalechina/easy-rl]"
         issue-term="title"
@@ -52,6 +53,11 @@
   </script>
 
 
+
+
+  
+
+
   <!-- <script src="//unpkg.com/docsify@4.7.0/lib/docsify.min.js"></script> -->
 </body>
 </html>